Cherry barbs are one of my favorite recommendations for anyone setting up a community tank — especially those who love the idea of barbs but are concerned about fin nipping. Unlike tiger barbs, cherry barbs are genuinely peaceful fish that get along well with most community species. And when males are in breeding condition, they turn a vivid crimson red that looks spectacular against green plants. After 25 years in this hobby, I’ve pointed a lot of people toward cherry barbs as a starter fish that stays manageable while still delivering real visual impact. They’re also surprisingly easy to breed if you want to try that side of the hobby.
A Brief Overview Of The Cherry Barb
The Cherry Barb is scientifically called Puntius titteya , they are one of the friendlier barbs you can purchase in the aquarium hobby and are ideal for a community tank. They are also great barb fish for planted tanks as the male’s reds contrast well with many green plants.
Scientific Name
Puntius titteya
Common Name (Species)
Cherry Barb
Family
Cyprinidae
Origin
Sri Lanka
Diet
Omnivore
Care Level
Easy
Activity
Active, social
Size
Up to 2 inches
Lifespan
4 years (up to 7)
Temperament
Peaceful
Tank Level
All Areas
Minimum Tank Size
25 Gallons
Temperature Range
73 – 81 Degrees F
KH
4 – 7
pH Range
7.2 – 7.5
Filtration/Flow Rate
Clam to Moderate
Water Type
Freshwater
Breeding
Egg-layers, easy to breed
Compatibility
Peace community species
Ok For Planted Tanks?
Yes
Origins and Habitat
The Cherry Barb originates from Sri Lanka from the Cyprinidae family. The fish live in freshwater ponds and slow-moving water sources across Sri Lanka. These freshwater fish have also been found in Columbia and Mexico, where they have adapted well to their surroundings.
The fish thrive in tropical rainforest conditions where the temperature rarely changes.
Even though the Cherry Barb Puntius titteya is thriving in the aquarium scene, the fish is now vulnerable in its natural environment. This is due to its popularity with aquarium owners and the disappearing waters in their shrinking natural habitat. Fortunately, these fish are now tank bred and easy to find in fish stores.
What Do Cherry Barbs Look Like?
Cherry Barbs are long, thin, brightly colored fish. As the name suggests, they are bright red, with the male species generally being more vibrant than the females, which are more of a tan color. The females also look fatter than the males.
All Cherry Barbs have a dark line that runs along the whole of their body. This is a solid brown line, but due to their scales, it can look dotted.
Their fins are quite small and can look translucent. The dorsal fin is shaped like a half shell and is halfway down its back. When they swim, this fin lies flattened so that they look like little torpedoes gliding through the water.
How Big Are They?
A Cherry Barb can grow up to 2 inches in length. Male Cherry Barbs are slightly smaller than the females. The size of your fish can depend on the care given and may only grow to one inch in length.
How Long Do They Live?
The Cherry Barb generally lives for between three and five years. However, with lots of looking after and Cherry Barb care, the fish can live up to seven years.
Some owners have reported Cherry Barbs living up to eight years. This could be possible with the right care and attention and includes the correct habitat, water parameters, and tank mates.
Temperament and Activity Level
These fish are peaceful and like nothing better than swimming around all day in their group. You should buy Cherry Barb fish together due to their schooling nature; they like to swim around in groups. This gives them the feeling of safety and security when swimming together.
They are active fish and enjoy swimming quite fast. They are also curious fish who like searching things out. They may spot something that they want to explore and leave the group for a second but will always return.
The only time that you will see any signs of aggression from the Cherry Barbs will be while mating. Males will then dominate the female and other males.
What Are Good Tank Mates?
Due to their peaceful nature and social temperament, Cherry Barb tank mates can be many other fish species. They prefer to school in a group of other Cherry Barb fish, so keep this in mind when getting other fish.
Good Tank Mates
The best Cherry Barb tank mates for these fish would be other peaceful smaller fish species that share the same nature as your Cherry Barbs. They also enjoy sharing the tank with larger bottom dwellers.
Some of the best fish species for tank mates would be:
Cherry Barbs can be quite shy around other fish species, so it’s better to avoid larger or more aggressive fish species. Any fish that can fit the barb in its mouth should be avoided. Other more aggressive barbs like the Cherry Barb should be avoided.
What Do They Eat?
Cherry Barbs will eat anything that you give them. These fish are omnivores and enjoy a diet of both plant-based and live foods. High-quality flake, freeze dried, and frozen foods can provide the required nutrients, along with some protein-rich food such as brine shrimp, black worms, or bloodworms to supplement their daily diet.
What About Live Foods?
The fish enjoy live foods, and these should be given to them regularly. A Cherry Barb will eat most things but prefers a diet including brine shrimp and bloodworm.
How Much and How Often To Feed?
You should aim to start feeding the fish twice per day. If they don’t eat everything they are given straight away, give them less on the next feed. Be careful not to overfeed your Cherry Barb fish, as this can lead to all kinds of health problems.
Tank Requirements
You should make sure that you have the right sized tank and environment for your Cherry Barb fish. They are easy to look after as long as they have the right conditions and habitat.
Tank Size
As Cherry Barbs are schooling fish, you should allow for around six fish initially. The minimum tank size should be between 25–30 gallons.
Tank Setup
The natural habitat for these fish is shallow water with lots of live plants, so you should try to re-create this where possible. They are naturally a timid fish, and will not be as social without the comfort of plants. You should try to have some plants on the surface of the tank to help them to feel at home. Some of the best plants to choose from are water wisteria, hornwort, and anacharis.
Dark sand or fine gravel is an excellent substrate for your Cherry Barb. This offers a similar environment to their natural habitat of a dark, silty base. This, along with a well-planted tank, will give them the right environment. In an aquascaped environment, active aquarium soil is a consideration for rooted and carpeting plants.
The dark substrate will also add to the aesthetics of your fish tank with the black substrate against the bright red of the fish. It’s a color explosion!
Water Quality
These freshwater fish are a pretty hardy fish and can tolerate a range of water changes and conditions. However, you should ensure that the water quality is suitable for the fish to avoid any illness.
Filtration
A standard hang-on back filter should be suitable for your Cherry Barb care, which will keep the water clean at all times. The filter should have a gentle flow as the fish are used to slow-moving water and will not do well in fast currents. For a planted tank, a canister filter is a good consideration to provide added mechanical filtration and flow.
Water Parameters
The ideal water parameters for your Cherry Barb freshwater fish would be:
To give your Cherry Barbs a healthy fish life, you must ensure that your aquarium is maintained to a high standard. The water should be kept clean, and parameters met at all times to give the best Cherry Barb care. The tank should also be cleaned regularly.
Test Water Conditions
Your tank water should be tested regularly to make sure that the parameters are met. By investing in high-quality water test kits, this will give you the accurate result that you need for your Cherry Barb fish.
The water should be tested for the following elements:
pH: This is the power of hydrogen level that tells you how acidic or alkaline the water is.
Ammonia: This is a byproduct of your fish’s waste and is toxic for your fish.
Nitrite: Ammonia is broken down to make nitrite which is also toxic.
Nitrate: You should not have more than 40ppm of nitrate in your water.
How to Set Up Your Fish Tank
Once you have bought everything you need, you will need to set up your Cherry Barb tank.
How To Set Up a Fish Tank
The first thing to do when setting up your fish tank is to make sure that everything is clean. You shouldn’t use any soap or disinfectant to clean as this may harm your fish; rinsing under water is sufficient.
The substrate should then be added to the tank, a couple of inches is plenty. Once you have done this, place an upturned bowl on the substrate—this will make the process of adding water easier. The filter and heater should then be added but not switched on just yet.
Dechlorinated tap water can then be added to the tank. Do this by pouring it over the upturned bowl so that the substrate isn’t displaced all over the tank. To make the water fish-friendly, you need to start the nitrogen cycle. A little liquid ammonia should be added to the water to start the cycle.
Your decorations and live plants can then be added, making sure that these have been rinsed through. Live plants can be planted in pots or directly into the substrate, and all damaged leaves should be removed.
The filter system and heatershould then be switched on and kept on all day and all night. Your live plants need light to survive, so your lighting should be switched on also.
The tank is then ready, but you shouldn’t add your fish just yet. The tank should be left to establish itself without fish for at least 10 days. The water parameters should then be tested to make sure that they are appropriate. All water parameters should be correct before adding any fish, or they won’t survive in the tank.
Once you have reached the correct parameters in your fish tank, you can then add your fish.
Health and Disease
The Cherry Barb is quite a hardy fish species; however, they can still be susceptible to ill health.
Signs of Health
Prevention is far better than curing illness, and you should make sure that your fish are looked after. This will help to avoid many illnesses that can affect the fish.
A healthy Cherry Barb is colorful and should be actively swimming around the tank with its group.
Signs of Ill Health
The first sign of ill health in a Cherry Barb would be changes in the behavior of your fish. If you notice anything different, check your fish out. Some of the changes in behavior could be: lethargy, not eating, or rubbing their body on the tank. They could also be suffering from ripped fins, which is a sign that there is something wrong.
Common Health Issues and Treatment
The most common disease in your fish would be Ich. This is also known as white spot disease, and the water should be treated with an Ich medication to get rid of this.
They can also suffer from other conditions, such as velvet disease, fin rot, and dropsy. These conditions are all curable as long as they are correctly treated in time. Your fish may need to be quarantined while being treated. Check out my freshwater fish disease article for identification and treatment of the most common diseases in our hobby.
Breeding
Cherry Barbs are easy fish to breed and will spawn often. The breeding process is simple compared to other fish species. The time-consuming work is in the preparation. You will need to set up a breeding tank with a similar habitat to their permanent tank.
You will need two tanks or will need to separate a tank into two areas, one for the breeding pair and one for the eggs. Cherry Barbs will eat the eggs once spawned if they are not separated. The breeding tank will need to be well planted as they like to hide and protect their eggs in the plants.
Once ready to spawn, the males will become more aggressive and start to chase the female. He will also become brighter in color, as will she. The female can lay between 200 and 300 eggs, and these will be scattered over the plants and substrate. You need to quickly remove these once spawned and put them in a separate tank.
Be careful not to add your female fish back into the permanent tank as soon as she has spawned her eggs. She will be tired and needs to regain her strength before being put back in with the male fish.
The fry will hatch over the next few days and should be fed on foods such as vinegar eels or micro worms. After a further couple of days, they will begin to swim around. As they get bigger, they can start to be fed on larger live foods like brine shrimp.
The fry will reach adulthood at around two months old, and at this point, they can be added to the permanent tank with other fish.
Are Your Cherry Barbs Male or Female?
There are a few ways that you can tell if your Cherry Barbs are male or female. The first one would be their color. The males are generally a brighter cherry red color, where the females are paler in color and can be tan or almost white.
MaleFemale
The lateral line that is found along the whole of their body from the head to the tail is different. This is a darker brown color in the female Cherry Barb than the male. The last difference would be the shape of the fish. The female Cherry Barb is slightly rounder in shape in the stomach area than the male; the male fish is slimmer.
Availability
You can buy both male Cherry Barbs and female Cherry Barbs from most pet stores as well as online fish stores. Make sure that you purchase your fish from a reputable supplier and that they are healthy fish. You don’t want to buy fish that aren’t looked after and could spread diseases to your other fish.
What You Need to Buy
You need to start with the right tank with lighting and a filter system. They are a tropical fish, so you should invest in a heater for the tank. You should then get the substrate, plants, decorations, quality fish food, and maintenance equipment.
To clean the tank correctly, you should invest in an algae magnet and an aquarium vacuum. You also need to make sure that you have plenty of water testing kits to ensure that your water is at optimal parameters.
Don’t forget your fish!
FAQs
Are They Aggressive?
Cherry Barbs are one of the least aggressive barb types you can purchase in the freshwater aquarium trade. They will happily school, are active, and great along with most fish. I would consider them the most well mannered barb you can buy.
How Many Should Be Kept Together?
These barbs are schooling fish and are best keep in groups. You should keep at least 5 cherry barbs together in an aquarium. Keeping these fish alone will result in lot of stress and diminished health for your fish.
Do They Need Heaters?
A cherry barb will not need an fish tank heater if your room temperature is stable. They will do fine when room temperatures range from 68-72 degrees. If your room stays at this range, you should not need a heater. If you live in a cold climate, you might want to consider one when it gets colder.
Closing Thoughts
The Cherry Barb Puntius titteya is a popular freshwater fish that is easy to care for and will give you hours of relaxing enjoyment. There’s nothing better than watching your fish swimming together around the tank.
We hope you enjoyed our fish guide, and it gives you the information you need to start your aquarium of colorful Cherry Barbs.
📘 Want to learn more? This article is part of our complete Freshwater Fish Guide — your ultimate resource for freshwater species, care tips, tank setup, and more.
This question comes up more than you’d think among pond keepers, and the honest answer might surprise you: scientifically, there’s no universally agreed-upon definition that separates a pond from a lake. I’ve visited water features ranging from small backyard garden ponds to sprawling natural lakes, and the line between them is genuinely fuzzy. What actually matters for fish keeping — depth, surface area, water temperature stability — is far more practical than whatever label you put on it. Here’s what the science actually says and how it applies to the hobby.
Honestly and scientifically, there’s no apparent difference between a lake and a pond. A pond is a small lake, and a lake is a large pond.
However, some limnologists have categorized ponds and lakes on the basis of surface area and depth, while others have completely denied these traditional hypotheses.
Therefore, the pond vs. lake debate has been around since the 1700s. But still, it’s an enigma.
What is a Pond?
Ponds are small depressions of shallow water that are surrounded by land. Ponds are freshwater bodies that cannot be larger than twenty acres. Any water bodies that are larger than 20 acres will be considered lakes.
Ponds are further categorized into two types,
Permanent ponds
Permanent ponds are all year long. They hold water all year round and provide habitants for a variety of wildlife. If you built a koi pond, this would be an example of a permanent man made pond. You keep it permanent by keeping it running year round. Naturally, it would likely dry out – would would classify it into the other type of pond.
Ephemeral Ponds or Temporary Ponds
These ponds usually form when rain and snowmelt and fill the depression in the ground. The temporary ponds develop during spring and dry up in summers. Hence, a breeding ground for frogs and other amphibians.
There are many ponds that are man-made and constructed for commercial or home use. However, natural ponds form near a swamp, surrounded by land.
Whatever the case may be, ponds have a sensitive ecosystem that is adversely affected by human actions, such as dam constructor, pollution, habitat reduction, and addition of non-native plants and animals to the pond ecosystem.
What is a Lake?
Lake is an inland body of freshwater found in mountains, deserts, near seashores, and in almost every climate or environment.
The size and other dimensions of the lake vary in size, ranging from a few square meters to bigger ones called seas.
Did you know?
The Caspian Sea is the world’s largest lake, covering an area of more than 370,000 square kilometers (143,000 square miles).
Not only in size, but lakes differ in their deepest point as well. From the world’s deepest, Lake Baikal, and the shallow lakes that could allow a person to wade across them, lakes vary in depth greatly.
Did you know?
Lake Titicaca is one of the deepest lakes that is around 3,810 meters (12,500 ft) above sea level. However, the Dead Sea remains the lowest lake, about more than 395 meters (1,300 ft) below sea level.
Lakes can be open or closed. However, it has been observed that all freshwater lakes are open, allowing the water to leave by a river or other outlet. Closed lakes are proven to be salty, due to the presence of salts and other solids by the process of evaporation.
Like ponds, lakes can either be natural or man-made.
The Importance of Water to Wildlife
Even though lakes do not receive sunlight enough to allow aquatic life to grow throughout, they provide homes to many birds and animals. The different types of fish grow and thrive in lakes. For example, Sturgeon, a fish that grows 6 meters and weighs around 680 kilograms is usually found in lakes.
Lakes are also breeding grounds for other animals, including bats, mink, turtles, alligators, and beavers.
Not just animals, different types of birds and fish are most commonly found in lakes.
What is the Difference Between the Two?
Like I mentioned earlier, size and depth are proven to be two relative properties that distinguish the two. However, there’s no set area to dictate the difference between lakes and ponds.
When I was in Russia, I had a healthy debate about lakes and ponds with my fellow hobbyists, to which they replied;
“Lake is natural water basin with slow water exchange and pond is shallow artificial water reservoir with an area of not more than 1km2.” It makes complete sense, but still highly questionable.
So, are there any differences between lakes and ponds? The answer is yes, though the line is slightly blurred.
A body of water with its own Microclimate
This is the most noticeable difference between lakes and ponds. The lakes have their own microclimate and they develop their own small waves in gusty conditions, preventing plants from growing right up to the water’s edge.
Contrastingly, ponds produce waves smaller than 12 inches in height.
Has a varied Water Temperature
Water in lakes has independent temperature layers, depending on the depth. However, a pond is a shallow enough body of water that is uniform in temperature throughout.
Size and Depth of Both Bodies of Water
The overall area and depth distinctions define the lakes and ponds. As a general rule of thumb, lakes are usually larger and much deeper than ponds.
In lakes, the sun rays can’t reach the bottom, whereas a pond is a body of water that is shallow enough to receive sun rays at the bottom.
The Presence of Vegetation
Since lakes (aphotic zone) are bodies of water that occupy a large surface area, sunlight doesn’t reach the floor, preventing aquatic plants from growing. According to some Limnologists, lakes allow rooted plants to grow around their edges only.
On the other hand, ponds (photic zone) are shallow bodies of water that allow natural weeds to take roots on the bottom and grow gracefully. As a result, rich vegetation and rooted plants thrive smoothly at the bottom of your ponds, and sometimes the surface.
Temperature During Summers
Temperatures in summers usually define the differences between ponds and lakes. In Limnology, if the water body is deep and laminate into three distinct layers, the water body is considered a lake. The three layers are stratified as;
Warm layer on the top
The cold layer at the ground
A layer of varying temperature in between termed Thermocline.
However, during summers, if a standing water body has one or two weakly defined layers, it is considered a pond.
Effect on Environment
One factor that really sets pond and lake apart from each other is their individual effects on the surrounding environment.
Lakes affect the climate of their surrounding environment. However, ponds are affected by the surrounding ecosystem
The Bottom Line
In conclusion, even though, not scientifically proven, there is a fine line between a pond and a lake. Therefore, the name, lake, or pond is arbitrary and not based on scientific facts. In general, the following differences might help you distinguish between the two.
In most cases, lakes are much deeper than ponds.
Ponds produce smaller waves around 12 inches in height.
Since lakes are deep standing bodies of water, sunlight doesn’t reach the ground which results in poor or no plantation.
Unlike ponds, lakes host crocodiles, platypus, and other creatures.
The temperature in ponds is relatively uniform than in lakes.
FAQs
What makes lakes?
It all lies in the depth and how the sunlight reaches the bottom of the water body. The water temperatures of lakes range in layers. The lake floor is too deep to support plant life. Hence, as the pond gets deeper (until no sun rays reach the bottom), it becomes the lake.
Can you swim in the water?
One might think; water bodies, as shallow as ponds might be safe to swim in. However, according to the Centers for Disease Control and Prevention, swimming in a pond might result in serious illness, especially in children, elders, and people with the weak immune system.
At what point does a pond become a lake?
Charles Elton was one of the most prominent founders of ecology who stated that lakes are the water bodies of 40 hectares (99 acres) or more. Therefore, a pond has to be 40 hectares to become a lake.
How big can it get?
There is no maximum or minimum size of a pond. Theoretically, a pond remains a pond until the sunlight reaches its bottom (photic zone). However, according to Wikipedia, the international Ramsar wetland convention sets the upper limit for pond size as 8 hectares (20 acres).
Final Thoughts
The differences between a pond and a lake are not drastic but important. Therefore, it’s best to educate yourself before going into the aquatic business.
One fascinating thing about lakes is that they can turn into ponds, marshes, swamps, or worse, dry grounds, if not properly taken care of.
Hence, whatever you have, maintain its health and take care of the ecosystem to keep it thriving and healthy.
If you have seen my best canister filter review post, you know that I’m a big fan of European filters. Knowing this, you can tell how my excitement was when I got the word that Aquael was coming to the US. I just had to do an Aquael Multikani 800 review.
From the Dutch Aquascape to the Dutch Reefing system to legendary manufacturers like Eheim, Europe has filled our hobby with quality and innovation. Aquael is a company that has been in the industry for over 40 years. They specialize in aquarium products, and their experience shows. The Aquael Multikani 800 filter is designed to be very versatile and work well with tanks of all sizes. It’s also easy to set up, maintain, and use! Read on below for our full review on this product.
In this post, I will dive into how the Multikani has a unique place in the Canister Filter space and how this Polish manufacturer is making a name for itself. Let’s get started!
In this review, will go over the following:
Features
Craftsmanship
Ease of Use
Value for Money
Product Support
Price
In a hurry? I recommend purchasing the AquaEl MultiKani from Amazon
Aquael Multikani 800 Features
The Aquael Multikani 800 has a compact size that makes it perfect for smaller tanks. The biggest feature is its ability to expand with its expandable chambers. You can add up to 8 additional cambers by purchasing expansion packs from Aquael. It’s really easy to achieve crystal clear aquarium water with this filter by expanding and customizating the filtration cartridges .
Multikani Expansions
The Aquael Multikani 800 has 4 different expansion cartridges you can order. The four types are:
ZeoMAX Plus
Carbo Max Plus
BioCeraMax Pro
PhosMAX Basic
While all of these will serve a purpose in a freshwater aquarium, personally I would prefer to add my own media. I’ll get into that later. For what Aquael offers stock, I would say the BioCeraMax and Carbo Max chemical filtration are the best cartridges to purchase. All the expansion cartridges are reusable.
The filter has a level to adjust to have different levels of flow, which you adjust by sliding the level. The first level is for gentle to moderate water movement, while the furthest is more aggressive.
Child Proof Lock
The Multikani is opened and locked with a special plastic key as showed in the above picture. This key is removable and can be stored safely making this one of the few truly child proof aquarium filters on the market. A huge plus for parents!
External Pump
The Aquael external pump is rated for 210 gallons per hour and can be hooked up outside of the canister filter. This allows you to clean the filer while having the pump still circulate your aquarium water!
This is not the first time I’ve been impressed with Aquael products. This is not the first time I’ve been impressed with Aquael products. After all, I did review the Cobalt EXT. The EXT is actually manufactured by Aquael. I just did not know that at the time. They also make the Cobalt Neo-Therm, one of the best aquarium heaters on the market.
Craftsmanship
Aquael has been in the industry for over 35 years, and their experience is evident in the quality of their products. They have over 600 employees all over the world, and every 15 seconds, someone in the world purchases a heater manufactured by them. They have two factories both in Europe and sell in over 100 countries
As you can see, Aquael is a high quality manufacturer. The Multikani is no exception to their standard. There is no cheap plastic feeling with this canister filter. Aquael backs their filter with a 2-year warranty. This puts them above the cheaper filters like the SunSun and less than the OASE and Fluval. They are definitely positioning themselves as a value based brand.
800 Value For Money
When it comes to value, I feel the the Multikani has positioned itself as the top budget option buy when it comes to canister filters. It compares best with the SunSun filter. While the SunSun is a bigger filter, it is also more expensive and has been knowing for having quality control issues.
The Multikani in comparison, has a lower price point and can expand it over time. While it can do up to 8 cartridges, I don’t feel you won’t need more than 3 or 4 paired with the pump it comes with. You can expand it to 3 cartridges and still be under $100 for a high quality canister filter. Given it’s not built cheap and has a quality manufacturer making it, I’m really happy with this product.
800 Ease of Use
I found the Aquael not as intuitive as other canister filters I have worked with. It is a unique filter after all. The biggest thing I had to get over was how durable the equipment is. At first, I was concerned about breaking the key that locks and unlocks the filter. The plastic is heavy duty. I thought that it was going to be delicate due to the price point.
The instructions are actually easy to follow, it’s just that the pictures are tiny. I provided a screenshot below of the configurations and the copy of the instructions below for easy reference.
It was really easy to get it installed in the tank. The unit does not have a self priming feature, so you will need to prime it the old school way. It makes sense that this filter would have this feature given the size of it. To prime, you will need to suck on the tube to deliver water to the pump. It is an old fashion way of setting up a canister these days, but since the filter can keep pumping even when you are cleaning it, you technically will only need to do this once.
Product Support
Aquael is new to the US Market. Knowing this, we know that product support is going to be limited as there is not a big user base. If you are purchasing from one of their resellers like Cobalt, you should be in pretty good hands as Cobalt has great customer service. The same can be said with Amazon since Amazon is willing to work with the buyers.
One of Aquael’s biggest criticism is the lack of email support. For phone support though, their service is great. The same can be said if you purchase the product at an LFS in the UK. I imagine Aquael will have similar service in the US with LFS. The only service number they have at the time of this article is (22) 644 76 16 int. 1138. It’s an international number, but they speak english. They should have a US number in the future as they expand distribution.
Multikani Price
I find Aquael’s products in between the prices of premium sellers like OASE and discount sellers like SunSun. For the Multikani, you will spend slightly less than the SunSun, but the filter will be small and the output will be as well. This places the Multikani in slower flowing smaller tanks. For a have flow and filtration heavy setup like a African Cichlid tank, I would recommend looking into an OASE or stepping up to their UltraMax filter.
This canister filter fits really well in aquariums 40 gallons and under. It is super quiet and can be expanded. Anything larger, I would recommend stepping up to a bigger capacity and higher flow canister. I think it’s probably the best filter you can buy that will work with larger betta fish tank setups and other setups that require lower flow. It’s also great for turtle tanks and shallow water tank setups.
Aquael vs Oase vs Fluval
Let’s talk about the elephant in the room – how does Aquael compared to the established European players in the market. All these brands and filters will produce crystal clear aquarium water, but there are differences between the brands that I will explain below.
Aquael vs Oase
Versus Oase, the Aquael offers a lower price. The best comparable filter in OASE’s line up would be the Filtosmart 60 or 100. You will need to add an expansion cartridge to make the Multikani comparable to it. With that, I find the Multikani better than the Filtosmart. You do not have to take out the entire unit to clean it out.
Another issue with the Filtosmart is the filtration confriguration. It’s in the wrong order. The Multikani is simple, it works from the top down so you just need to place all your mechanical filtration at the top to get the cleanest water in the biological chambers. The Multikani is cheaper, easier to use, and more convenient than the OASE.
Aquael vs Fluval
The Aquael Multikani is best compared to the Fluval 107. The Fluval has bigger filtration capacity, a higher flow rate, and a higher price tag. The Aquael offers a more compact size, cheaper price. Between the two, the Fluval canister filter definitely has an edge, but at a higher price tag.
If your focus is on cost, I would go with the Multikani for a smaller tank. If your focus is on features, I would look at the Fluval 107 instead. The fluval is more suited for traditional community tanks while the Multikani is best suited for low flow setups.
Closing Thoughts
The Multikani a great option for small tanks or setups that require a lower flow rate. The filter comes with everything you need to get started- including tubing, fittings, and media. It’s also easy to install and maintain without any special tools or training required! Aquael is a trusted brand for all your aquarium needs, and the Multikani filter provides an excellent value. Click here to purchase this item from a trusted retailer today.
🔧 Want to learn more? This article is part of our complete Aquarium Equipment & Gear Guide — your ultimate resource for filters, heaters, lights, pumps, tanks, and more.
Let’s be honest, backyard ponds look beautiful with all vegetation and aquatic life swirling in circles gracefully. But it’s the pond maintenance that demands arduous hours of labor.
Most pond hobbyists are aware of the fact that an unhealthy pond means an unhealthy ecosystem that is dangerous and detrimental to you and the environment. Therefore, it’s imperative that you do your research and homework before creating your own, beautiful garden ponds.
In this article, I’m putting my years of experience to use and demonstrating seasonal pond maintenance and the recommended steps to follow during each season.
Happy pond keeping!
Seasonal Pond Maintenance
Nature behaves differently in all seasons, and so does your pond. Therefore, you cannot follow the same tips throughout the year. Pond keeping demands in-depth knowledge and research about seasonal pond maintenance and its effects on your aquatic life.
Usually, the type of pond determines its maintenance. However, this article will highlight popular seasonal pond maintenance tips that are particularly apt for spring start-ups to summer pond maintenance.
Videos are always helpful, so for those that prefer to learn through video, here is a great video by anypond below. He’s a UK pond maintenance contractor.
So if you’re new to water gardening, stay tuned to learn the essentials of pond care and maintenance.
Spring
During the spring season, your pond demands to be cleaned and un-winterized.
Or if I may say so, spring pond maintenance is just the opposite of winter preparations. While in winter, you winterize your equipment for the cold, dry days, spring brings joy and life to your ponds and brings your aquatic life back from its long hibernation period.
Here are the ideal easy steps for spring pond maintenance.
1. Check Your Equipment
Check your equipment and make sure they are running properly. Winter is the best time to replace UV bulbs and clean your equipment. Spring is the time to double check to ensure everything is in working order.
2. Feeding Your Fish
Start feeding your pond fish as soon as the temperature hits a steady 50 degrees. I recommend feeding a cold temperature feed until the temperature rises to 60 degrees. After reaching a normal temperature of 60 degrees and above, you can start with the regular feeding program for your pond fish.
3. Remove Accumulated Debris
During the winterization process, your pond accumulates debris and organic waste, including leaves, twigs, fish waste, and grass clippings. Even though the filtration system takes care of the debris, some waste turns into muck and sludge, which are a breeding ground for algae and cause water clarity issues. Therefore, I recommend spooning away the leaves, twigs, and other debris with a net.
Deep cleaning involves draining the pond and washing the surface and rocks. This is more of a common routine in ponds that have gravel. Personally, I prefer bare bottom systems for Koi tanks. On a high end install, a bottom drain and bare bottom mitigates the need to drain clean the pond.
During the cleaning process, you can transfer your fish and aquatic plants in a large tub with proper aeration to avoid inconvenience. As soon as your pond is free of debris and scum, refill it with water and return the fish, plants back.
Fertilizing the aquatic plants
When you put the plants back in the water, don’t forget to fertilize them according to their recommended dosage and needs, i.e., full fertilizing for new plants and maintenance fertilizing for the existing ones.
Adding (nitrifying) beneficial bacteria and cleaning the filters
It is imperative to clean the filters to remove accumulated sediments. Also, to keep your ponds properly maintained, add beneficial bacteria for bacterial colony stimulation.
Summer
The most favorable season for your water garden to thrive is summer.
Summer season begins when the water hits up to 80 degrees and higher. Your fish should be fed generously during this time. However, there are a few things that should be taken into consideration while maintaining ponds in summer.
Stock your pond water with Minnows or other small fish
Mosquitoes can ruin the summer vacations that you’ve been longing for. Therefore, it is recommended to stock your pond with Minnows or other small fish to control the mosquito population. Also, consider larvicides and proper aeration to eliminate potential big problems.
Keep your water source free of grass clippings and other debris
Algae blooms happen the most in summers. Therefore, keep grass clippings, fish waste, and other accumulated debris out of the pond water.
Install aeration system
An effective and cost-efficient aeration system help maintain your pond and keep it clean throughout the year. It also increases oxygen supply by keeping the cooler water on the bottom of the pond, keeping the aquatic life healthy and happy all year long.
Fall
Fall is the season when you need to put extra effort into your pond because it prepares you mentally and physically for the worst season of a garden pond, i.e., winter.
Winter puts most of the life to sleep and therefore, it is recommended to remove the things that winters can damage, including the pond filters, pumps, aerators, and fallible plants. If there are fish in your garden ponds during winter, you can install the pond equipment momentarily to de-ice the water.
Here are some things you can do to maintain your water garden during fall.
Install leaf netting
Fall means lots of leaf shedding, and the accumulated leaves are just unwanted debris for your pond.
Therefore, it’s important to install lead netting to prevent the leaves from falling into the pond. Also, I recommend trimming and pruning the dead foliage of your aquatic plants just above the soil.
Clean excess debris
Accumulated leaves and fish waste affects your pond’s oxygen level and stresses the aquatic life. Therefore, always clean and remove excess debris using a hand net. If the accumulated debris is hard to reach, I recommend using a pond vacuum.
Switch to fall-friendly Fish food
It’s best if you switch your fish to the fall-friendly pond fish food that easily digests in cooler temperatures and sustains your fish in the dormancy period.
When the water temperature drops below 50 degrees, I recommend Wheatgerm food three times a week, that too, only if your fish consume it in a 5 minute period. However, when the temperatures fall below 40 degrees, stop feeding your fish until spring time.
Install de-icer and proper aeration kit
In freezing temperatures, de-icing prevents harmful gases to accumulate under the ice and maintains healthy oxygen levels. De-icers allow oxygen levels to remain healthy and saturated in the pond by keeping a hole open in the ice.
Therefore, de-icers and aeration kits are a must-have for your pond during fall and winter.
Winter
Winter is the season that adversely affects your pond fish and clearly, it’s the worst season for your water gardens.
In such hard times, only two tips keep the pond game going. The first and foremost tip is to stop feeding your aquatic life once the water temperature drops below 50 degrees. The second life-saving tip is to install a floating pond de-icer to allow toxic gases from organic decomposition to escape without causing any harm to your pond. De-icers are vital for maintaining your pond in winter because breaking the ice would potentially kill the pond fish.
Here are some other tips you can follow for winter pond maintenance.
Prepare Submersible Pond Pumps
First of all, check the submersible pond pumps if they are in good working condition.
The pond pump should not be lower than 1 foot — this ensures the circulation of surface water solely throughout the garden pond. The pond pump also helps in marinating warmer temperatures at the bottom of the pond where the pond fish hibernates1.
I recommend running the submersible pump continuously until the temperature drops to 10 C or 50 F
Reduced fish feeding
Like I said before, reduced feeding does wonder as it doesn’t allow debris and waste to accumulate at the bottom of the tank. Also, during winters, fancy goldfish should be kept indoors for their survival and distribution of food.
Reduce the feeding when the water drops down to 44 F to 50 F as fish can only digest low protein foods, such as wheat germ. As soon the water drops to 40 degrees Fahrenheit, the fish start to hibernate and so you will need to stop feeding your fish entirely.
Therefore, it is recommended to monitor the pond water temperature so you know when to stop feeding the fish.
Protect Aquatic Plants
Aquatic plants such as pond lilies cannot tolerate harsh weather during winter. Therefore, some preventive measures should be taken for their protection.
It’s recommended to remove Canna lilies from your pond. You can replant them in the green house instead for protection.
In the case of small ponds, be sure to cut the heads of any marsh reeds before they shed their seeds in the pond.
Install biological filters in your pond to keep the fish healthy during winter.
Floating ball to prevent freezing
One low cost way to maintain a pond during winter is to use the floating ball. The floating ball prevents pond freezing and maintains the gaseous exchange by movement.
However, in some areas where the weather is extremely cold and dry, it may be best that you install an inline pond heater to maintain a desirable temperature for the pond. Nevertheless, an inline heater is a costly option. Some Koi Fish enthusiasts will move their prize winning fish indoors for the season to a holding tank. This is another good option in extreme winter climates.
FAQs
How do you maintain?
Maintaining a pond might sound baffling at first, but as soon as you get the hold of it, things turn out pretty good.
Here are some essential steps to maintain a garden pond during all seasons.
1. Pond aerator 2. Manually clean the debris and pond waste 3. Monitor water temperature and pH balance 4. Avoid overcrowding the pond 5. Add beneficial bacteria 6. Use aquatic plants to naturally maintain the oxygen levels of your pond
Are ponds a lot of maintenance?
I would say, yes! Ponds need regular maintenance and upkeep weekly or monthly. The maintenance of your pond depends on the size, as smaller ponds are more prone to fluctuation in ecology and hence need regular cleaning to prevent debris and waste accumulation.
Large ponds need weekly or monthly maintenance, and at the beginning or end of the growing season.
How do you maintain water quality in a pond?
Maintaining water quality in a pond is not rocket science. You just need to follow the following tips to successfully maintain the water quality.
1. Examine oxygen levels to avoid algae blooms 2. Avoid overfeeding your fish to prevent waste accumulation 3. Add a proper and healthy balance of aquatic plants 4. Choose the right size of pond pump 5. Keep your pond cool during summer 6. Clean the debris before it starts to decay
How do I keep my natural pondsclean and clear?
The natural pond remains clean and clear if you target the root cause of the problem with a sustainable approach.
Natural pond products will transform your pond’s ecosystem, ultimately lowering your costs most effectively. I’m sharing some of the simple, easy, and natural steps to maintain your garden ponds.
1. Use algaecide or herbicide to control algae blooms 2. Control the accumulation of excess nutrients by using natural, beneficial bacteria and enzymes 3. Add aeration methods to treat several pond problems 4. Manage the amount of vegetation entering your pond 5. Maintenance is the key to naturally healthy, clean, and clear ponds
Final Thoughts
Garden ponds not only make everything look beautiful in your home interiors, but they also turn your home more earth-friendly. Therefore, it’s crucial to keep your ponds clean, healthy, and properly maintained throughout the year.
I’ve given you some great tips on how to keep your garden ponds clean, healthy, and properly maintained. If you have any other helpful pond maintenance tips that we haven’t covered here today, please share them in the comments below!
Oranda goldfish were one of the first fancy varieties I fell in love with when I started keeping goldfish seriously. That distinctive wen — the fleshy hood growth on top of their head — makes them look almost prehistoric, and yet they’re surprisingly docile and easy to bond with. I’ve kept them in both indoor aquariums and outdoor ponds over the years, and they remain one of my go-to recommendations for anyone looking to step up from common goldfish.
When you first bring home your new Oranda goldfish, it can be overwhelming with all the things you have to do. You may worry about how much water to change each week and what kind of food to feed them. But don’t fret! I’m here to help!
I’ll teach you everything there is about caring for your Oranda goldfish – from tank size requirements and the best type of food, to proper feeding techniques and even a few tips on breeding fish. So get ready because we are about dive deep into this fascinating Goldfish!
A Brief Overview Of The Oranda Goldfish
Scientific Name
Carassius auratus
Common Name (Species)
Oranda Goldfish
Family
Cyprinidae
Origin
China
Diet
Omnivore
Care Level
Easy
Activity
Active, social
Lifespan
Up to 15 years
Temperment
Peaceful
Tank Level
All Areas
Minimum Tank Size
30 Gallons
Temperature Range
65 – 72 Degrees F
KH
150
pH Range
6.0 – 8.0
Filtration/Flow Rate
Moderate
Water Type
Freshwater
Breeding
Egg-layers, Easy to breed
Compatibility
Peace commuity species
Ok, For Planted Tanks?
With Research
Origins and Habitat
The Oranda Goldfish is a beautiful and hardy cold water fish with an interesting history. Originating in China, this variety of goldfish was bred to resemble the Chinese Lion Dog. The lion dog features prominently on many pieces of art, furniture and jewelry as well as serving as guardian for the temples where it was kept!
They are descendants of Wild Carp and Goldfish (Carassius auratus). They are an artificially cultivated breed, also known as the Red Cap Oranda Goldfish. There are no Oranda Goldfish living in the wild, as they are raised in captivity. Their distant relative, the Prussian Carp, can still be found today in the slow-moving fresh waters of Central Asia.
What Does the Oranda Goldfish Look Like?
Oranda Goldfish Carassius auratus are egg-shaped fish and can be identified by the cap on their head. This is a series of outgrowths that can be easily spotted and is also known as the “wen”. The head growth develops as the fish ages and normally starts appearing when the fish is four or five months old. They are different than a lionhead or Ranchu goldfish due to their dorsal fin.
There are different types and colors, with the most common being a shimmering yellow or orange Oranda. Some of the most distinctive Oranda Goldfish species are:
Black Oranda Goldfish: This is a stunning but sinister fish that’s completely black, including its black cap.
Blue Oranda: Goldfish These are extremely colorful fish that come in every shade of blue, from light, baby blue to vibrant, cobalt blue.
Red Cap Oranda Goldfish: This Oranda Goldfish is the most popular species. It’s completely white with a bright red cap that stands out. This fish breed comes from the aquarium Goldfish Carassius auratus.
Oranda Goldfish generally grow to around 6 or 7 inches. However, they have been known to grow to double this size in well-maintained tanks or ponds.
Most of the length of the fish is due to its tail fin, which can be up to two-thirds of its length in some species. The largest Oranda Goldfish ever recorded was a whopping 14 inches long and named Bruce.
How Long Do They Live?
The life expectancy of an Oranda Goldfish Carassius auratus is largely dependent on the care given and their surroundings.
These fancy Goldfish have a potential lifespan of between 10–15 years but have been known to live beyond this, up to 20 years in some cases. Proper care will allow your fish to live beyond the average goldfish lifespan.
Temperament and Activity Level
Oranda Goldfish peaceful fish with a calm temperament. They keep themselves away from any trouble. They are social and friendly fish. They will get along with most other fish, especially other breeds of Goldfish Carassius auratus.
They are pretty active and will spend most of the day swimming around the tank. They’re great fish to observe, and you’ll never tire of watching them gracefully swimming, digging, and foraging.
What Are Good Tank Mates?
Oranda Goldfish are great tank mates and can live with most species, but some are better than others.
Good Tank Mates
These fish love spending time with other Oranda Goldfish or similar fancy Goldfish varieties. If you get other species, they should be able to live in the same living conditions and at the same water temperatures. Other fancy variety Cyprinid fish like the Pearlscale Goldfish or Catfish are other freshwater fish that are good tank mates for the Oranda Goldfish. They will also keep the tank clean and clean up after the Goldfish, which can be a little messy.
Fish Species to Avoid
Small fish can be mistaken as a snack for your Oranda Goldfish, so it’s best to avoid putting them together. You don’t want any fin-nippers that could cause damage to your beautiful Oranda, such as Neons, Mollies, or small Barbs.
Oranda Goldfish are not the quickest swimmers; they like to saunter rather than speed along. This isn’t ideal when racing against a speedy comet for lunch.
Oranda Goldfish aren’t fussy eaters; they are omnivores and will eat pretty much anything. They can be greedy and will eat whatever they can get in their mouths, including any small fish or invertebrates that may be in the tank.
They like to eat flake foods or pellets and will also eat nutritious spinach or salad. For staple pellet food, I recommend NorthFin Goldfish Food.
Your Oranda Goldfish needs a varied, balanced diet, and live foods are an excellent way to add to this. They like high protein foods, such as bloodworms, tubifex worms, brine shrimp, and daphnia.
How Much and How Often To Feed?
You should be careful not to overfeed your Oranda Goldfish as they don’t seem to have a full sensor and will just keep eating. Feed younger fish twice a day and adult fish just once a day.
Small portions are a good way to control how much your fancy Goldfish eats every mealtime.
Tank Requirements
The tank requirements for Oranda Goldfish are not restrictive, and they can be kept quite simple in the right environment.
If you’re starting off with just one Oranda, make sure you have the right tank size. It should be at least 20 gallons for one fancy Goldfish. For every additional fancy Goldfish you add to the tank, you should increase the tank size by 10 gallons.
They aren’t speedy swimmers, but they do need lots of room, and they can grow quite big, quite quickly. They also create a lot of waste, so a larger tank will help to give a healthier environment for your fish.
Tank Setup
Oranda Goldfish aren’t fussy and don’t need much to keep them happy, so their tank setup is relatively easy.
They need plenty of space when swimming around, and they have the wen on their head that may compromise their eyesight. With this in mind, you should not over-decorate the tank.
Oranda Goldfish like to dig, so make sure that the substrate you choose isn’t sharp and won’t harm them. Sand or rounded gravel is a good choice, and your fish will have hours of fun digging.
Freshwater plants are good to have, but these should be hardy as your fish will like to eat the plant leaves. They may also damage more fragile aquatic plants when digging and scattering the sand or gravel. Lighting for your tank isn’t necessary for the fish, but it may help with your live plants. Hardy plants that are column feeders like java fern do well in fish tanks with Orandas.
Water Quality
Oranda Goldfish are freshwater fish that can be sensitive to water temperature. It’s essential to get the water conditions, quality, and temperature just right.
Filtration
Oranda Goldfish Carassius auratus can be mucky and create a lot of waste, so you need a good filtration system. An efficient filter will remove all toxins from the tank and keep the water clean.
However, your fish can become stressed by strong water movement, so keep this in mind when getting a filter. An adjustable flow outlet will help with this, or you can redirect the flow via the plants away from the swimming area. Due to their messy nature, filtration is one of the most important water parameters of oranda goldfish care.
Water Parameters
Oranda Goldfish like to be in cooler freshwater with a temperature between 65–72 degrees Fahrenheit. They prefer a neutral pH level, which should be between 6.0–8.0. The water hardness level should be between 4 and 20 dGH.
As long as you stick within these parameters, your fancy goldfish should live very comfortably.
Aquarium Maintenance
You should maintain your aquarium to a high standard to ensure that your fish are safe and healthy. To keep the water toxin-free and clean from waste, you should complete a 25–30 percent water change each week and check the water hardness.
You can clean the glass of your tank with an algae magnet. Be careful not to remove all the biofilm and bacteria that make your biological filter effective. To clean the substrate, use an aquarium vacuum. This will pick up all the waste from your fish, any leftover food, and plant debris.
Your filter media should be cleaned in tank water once a month, depending on your water hardness, to get rid of all the sludge that builds up. This should be replaced as recommended by the manufacturer.
Test Water Conditions
To make sure that your water is kept to an optimal standard for your Oranda Goldfish, you should test it once a week before your weekly water change. You can buy strip tests or liquid tests to test your water. Strip tests are quick and easy to use, but liquid tests give a more accurate result.
The water conditions should be tested for the following content:
pH: This shows how acidic or alkaline the water is.
Ammonia: This is a byproduct of your fish’s waste and is highly toxic.
Nitrite: This is produced when ammonia is broken down and is toxic also.
Nitrate: It is recommended to have no more than 40ppm of nitrate in your water.
How to Set Up Your Fish Tank
Once you have everything you need for your fish tank, you need to set it up ready for its new inhabitants. It should be set up to give your Oranda Goldfish the space, oxygen, and healthy lifestyle that they need.
How To Set Up a Fish Tank
The first thing you should do is clean the tank and wash the gravel that will go into the tank. They should be rinsed under running water to remove any dust or dirt. Then put a few inches of the gravel or other substrate into the tank. Once you have done this, place an upturned bowl on the substrate—you’ll soon find out why.
Before you add any water to the tank, you need to install the filter and heater, if required. Don’t switch these on just yet, though.
You then need to start adding dechlorinated tap water. Do this by pouring it over the upturned bowl so that the substrate doesn’t get moved all over the tank. Tap water alone is no good for your fish; you need to start the nitrogen cycle to make the water safe. A little liquid ammonia needs to be added to the water to start the cycle.
You can then add your decorations and live plants, making sure that these have been washed thoroughly. Plants should have any dead or damaged leaves removed before planting in the substrate. They can be planted in pots or directly into the substrate.
The filter system should then be switched on and run 24/7. Live plants require light, so switch any lights on also. If you are looking for a power filter (AKA hang on back filter), the Hagen Aquaclear is my top recommendation.
You’re almost ready, but not quite. You need to leave the tank as it is without adding any fish for at least 10 days. You should then test the water hardness to make sure that it’s suitable. All levels should be correct before adding any fish, or they won’t survive.
Once everything is at the right level, you can introduce your fancy Goldfish to their new home.
Health and Disease
Oranda Goldfish are pretty resistant to ill health. However, they sometimes get sick, so you need to know how to spot the signs and how to care for them.
Signs of Health
Oranda Goldfish are social fish and spend most of their day swimming around the tank. When not swimming, you can find them foraging in the gravel at the bottom of the tank or around the plants. Don’t forget feeding; the greedy Orandas are always on the lookout for food!
If they’re doing this, they are generally healthy fish, and you have nothing to worry about.
Signs of Ill Health
There are easy ways to tell if your Oranda is not feeling itself or is ill. The most common signs are:
Leaving food and not eating.
Rubbing its body on the substrate or plants.
Not socializing and avoiding its tank mates.
Staying at the water surface.
Sitting at the bottom of the tank.
Swimming on its side.
Sores or ulcers appearing on its skin.
If you spot any of these signs, check your fish out, as it could be ill. Check out my freshwater fish disease post for info, care, and guides on how to cure common fish diseases.
Common Health Issues and Treatment
Goldfish Carassius auratus can suffer from several diseases. Some of these can be treated quite easily, and your fish will make a full recovery.
The most common disease for Orandas is Ich, which is also known as white spot disease. This is an aquatic parasite that causes tiny white dots to appear on your fancy goldfish. The fish will rub against objects in the tank when affected. The treatment for this is to treat the water with an Ich medication.
Orandas can suffer from fungal infections where they have growths on their body. The affected Goldfish should be quarantined away from the other fish, and the water in their tank treated.
Here are other common diseases that Orandas suffer from:
Anchor worms
Fish lice
Bacterial infections
Swim bladder issues
External parasites
Fungal infection from wounds
In some varieties, they can suffer from their cap growing and obstructing their vision or preventing them from being able to eat. If this happens, pay a visit to your local pet store for medication that will help.
Breeding
It’s becoming more popular to breed Oranda Goldfish at home, which is relatively easy to do. You should have a separate tank for the breeding pair of Orandas. There, you should recreate the same conditions as the main tank, with the addition of fine leaf plants. The Goldfish will then lay their eggs in the leaves of the plant.
Feed them plenty of live food before breeding. Once these fancy Goldfish are ready to breed, the color will intensify, and they will chase each other around the tank.
Female Goldfish Carassius auratus can lay in excess of 10,000 eggs over several hours. Once the eggs are laid, the adults must be removed from the tank straight away so as not to eat the goldfish fry. The eggs typically hatch in less than a week, and the fry should be fed liquid food. Once they are bigger, they can be given baby brine shrimp.
Availability
Oranda Goldfish can be found at any fish store or pet store, and they vary in price. They can cost from just a couple of dollars per fish to several hundred dollars for rare breeds, colors, or fancier varieties.
If you are looking for a specific color such as black or blue or rare variety of fancy Goldfish Carassius auratus species, it’s best to contact an online store with a specialty. However, these will be more expensive than your standard colors. Make sure that you know what you are buying before adding it to your cart. For a guide on the best places to back fish online, check out my guide. You can also shop on this link for WYSIWYG Orandas!
What You Need to Buy
Things that you need to buy in the store to give your fancy Goldfish a healthy life would be:
Tank—minimum of 20 gallons for one fancy Goldfish Carassius auratus.
Oranda Goldfish need at minimum a 20 gallon tank. While that is the bare minimum, the recommended is at least 30 gallons. A 30 gallon fish tank will allow for more space for your goldfish to grow and thrive.
How Long Do They Live?
Generally, an Oranda Goldfish will live up to 15 years in an aquarium environment. There have been cases of these fish actually living longer – usually in larger tanks or well maintained indoor ponds.
Are They Aggressive?
Oranda goldfish are not aggressive fish. They are pretty docile and will not act aggressively towards other fish. However, they are foragers. They will pick on animals with barbels like axolotls. This isn’t because they are aggressive, it’s because it’s their nature to forage.
Do They Need A Heater?
Oranda Goldfish do not need an aquarium heater. They are coldwater fish and will do well in more home. If anything, the worry with goldfish is in hot climates in the summer where the room temperature can raise to over 78 degrees. In those cases, it is best to consider getting fans or an aquarium chiller to lower the temperature.
Closing Thoughts
The Oranda Goldfish Carassius auratus is a diverse fish that comes in all colors and sizes. It looks stunning in your aquarium with its vibrant colors, huge head, and flowing fins.
These fancy Goldfish are easy to care for when looked after properly, and they could live for many years. Whether you choose a black or red cap
We hope you found our guide helpful, and it helps you get started with your new aquarium of beautiful Orandas. If you want a bigger deep dive on goldfish in general, check out my goldfish care guide.
📘 Want to learn more? This article is part of our complete Freshwater Fish Guide — your ultimate resource for freshwater species, care tips, tank setup, and more.
Pond scum is one of those problems that sneaks up on you — the water looks fine one week, and the next you’ve got a layer of green or brown slime coating the surface. I’ve dealt with it in my own outdoor setups, and I can tell you it’s almost always a nutrient issue at the root. Once you identify what’s feeding it, the solution becomes a lot more straightforward than most guides make it out to be.
Pond scum is almost always a nutrient problem first and an algae problem second. The algae is just taking advantage of conditions you’ve created — too much fish waste, overfeeding, decomposing leaves sitting at the bottom. I see pond keepers chase it with treatments and UV sterilizers when the real fix is cutting off the nutrient source. That said, once you’re in the middle of a bloom, there’s a smart order of operations to get things back under control. Here’s what actually works, starting with root causes.
In this article, I’ll discuss the causes of pond scum, types of different algae, and preventive measures to control pond scum in your garden ponds.
Causes of Pond Scum
The causes of pond scum are the high level of specific nutrients, excessive daylight, and warm temperatures.
Excess nutrients, including fish waste, decaying vegetation, and fertilizers, can enter the water and feed algae, resulting in rapid multiplication of algae.
Excessive daylight is also the prime cause of pond scum, as clear shallow ponds are the breeding ground for algae forms.
Low levels of oxygen and warm temperature are also the culprits of pond scum.
To cater to these causes, pond or fountain filters must be properly maintained with the right size to prevent pond scum.
Also, limiting the number of nutrients that enter your pond should be controlled. Try to manually skim the debris and waste from a pond and remove the algae. You can also install an effective filtration system to prevent scum.
Direct sunlight adds to the pond scum. Therefore, pond dye and aquatic plants, including water iris or water lilies, should be added to reduce algae growth.
Types of Algae
There is a variety of pond algae. However, not all of them are harmful to your ponds. Some algae are beneficial that clings on the sides of your pond, producing oxygen during the day and utilize nutrients in the water. Furthermore, they provide nutrition to your pond fish.
Pond algae are divided into three primary forms; filamentous, macrophytic, and planktonic.
Filamentous Algae
Filamentous algae (Picture Source), also hair-like algae, are the most common types of algae, eerie filaments, and attach themselves to the pond’s bottom floor or rocks and aquatic plants. When the filamentous algae grow rapidly, it breaks free and floats on the surface in the form of thick algae mats or pond scum.
Filamentous algae is further classified into spirogyra, Cladophora and Pithophora.
The prevention and control of filamentous algae mats in garden ponds are easy, provided the proper treatment and early diagnosis. Depriving the filamentous algae with favorable conditions, such as nutrients and temperature, helps to control their growth and reduce the chances of potential damage to your pond and aquatic plants.
Chara
If there is a horrible onion-like smell in your pond, this is likely due to the presence of Chara algae.
Chara these freshwater algae forms grow on the bottom of the pond floor. Chara is usually misunderstood as a weed. However, it lacks roots and does not grow above the water surface.
Oscillatoria
The red-purple or bluish tint in your pond is because of Oscillotoria.
It’s freshwater, blue-green algae (cyanobacteria) that thrive in hot water springs. Oscillatoria forms blue-green mats on the bottom of the water surface. However, when they multiply, provided favorable conditions, they release and float at the water surface, making the water appear brackish.
Planktonic/Microscopic Algae
The normal production or presence of Planktonic algae is healthy for your pond as they supply your pond with dissolved oxygen, mandatory for the health of your pond and aquatic life.
However, during summers, the planktonic algae bloom, giving your pond a pea-soup coloration, and that’s when you should take preventive measures to control the plankton algae.
Since they are unicellular and multiply rapidly, you cannot detect them with your naked eye. Some common types of Planktonic algae are Chlamydomonas, chlorella, and euglena species.
How To Control Algae Naturally?
If you’re someone who doesn’t want to use chemicals, there are natural ways to control algae. The most effective ones are good water quality, pond aeration, the addition of beneficial bacteria, and the use of ultrasonic algae control.
Aeration
Ponds experts recommend using pond aeration methods to improve the overall appearance and health of the pond. Aeration will also curb pond scum growth.
To facilitate pond aeration for large ponds, the use of a land-based compressor is encouraged, which boosts the level of dissolved oxygen in your garden pond.
The bacteria level in your pond should be maintained to control the situation.
It is recommended to add beneficial bacteria in ponds where the bacterial count is low
You can add the bacteria in liquid or powder form. Either way, they have the same function, i.e., to eliminate the pond algae and pond scum by lowering the nutrient content of the water
Beneficial bacteria works the best to maintain the cleanliness of your pond if supported by the aeration method. Therefore, pond aeration is the primary requirement. Many DIY Pond Kits have both a filtration and aeration component.
An advanced technology that has done wonders to control specific types of algae and pond scum in your pond is the use of ultrasonics.
The process works by sending sound waves through water that vibrates every algae in the pond. The vibrations eventually damage the algae cell, and it dies
Ultrasonic algae control tends to eliminate the algae alone. However, it can also be integrated with beneficial bacteria and aeration to control the algae blooms and pond scum.
A common install is an Aquascape IonGen for smaller ponds. Large ponds and lakes would look more into a commercial solution, of which KLM Solutions is the go to brand.
I have faced the problems of algae blooms and pond scum in my garden ponds, and so I know how badly it affects your pond ecosystem and the overall appearance.
However, I’ve tried two products and never looked back since then. I recommend using API Pond- Zyme Sludge destroyer and Cabin Obsession Pond Sludge remover to prevent algae blooms in your pond. Both work great against pond scum
But please be informed that not all ponds have the same response to the treatment
If you own a Koi or Goldfish Pond, you’d know that springs bring generous algae blooms and a foul smell that is a distraction for your visitors.
Luckily, the API pond-zyme sludge destroyer works like a charm in gulping the sludge and improves water clarity. It has pond cleaner with natural pond bacteria and barley, which breaks down fish waste and destroys pond scum and sludge effectively.
If you keep using this product religiously, I reckon it would save you a lot of money on pond maintenance and cleanliness.
If you’d like to deepen your pond naturally without dredging, Cabin Obsession Pond Sludge Remover is a total steal!
It removes around 2 inches of sludge by releasing concentrated enzymes and bacteria that gulp the organic waste and destroy the muck, up to 2 inches per month. The product is all-natural and hence safe to use for fish and other aquatic life.
Cabin Obsession Pond Sludge Remover is the most affordable solution for your pond’s maintenance needs for large ponds. It comes in a bucket that would last you approximately 10 months of regular pond maintenance.
This allows you to get rid of the foul-smelling odors, ugly shorelines, and layers of pond scum with just a bucket of goodness.
FAQS
How do I get rid of pond-scum?
The easiest ways to get rid of pond scum are 1) Improve oxygen levels of your pond by proper aeration methods 2) Add aquatic plants 3) Make use of the organic, environmentally-friendly algaecide to treat your ponds 4)Reduce the use of fertilizers
What is the brown scum?
It’s pond scum. Pond scum is usually black or brown, and a slimy, sticky substance that accumulates at the bottom of your ponds. It is nothing but the decaying waste in the form of fish debris, grass clippings, dead algae. It acts as a fertilizer for the harmful pond algae, so you should treat it promptly to prevent the layers of muck from developing on the pond surface.
What causes green scum on ponds?
The green color comes from the presence of single-cell planktons in your pond, giving it a pea-soup coloration.
What does ponds scum eat?
Pond scum is algae, and algae do not consume any plants or animals. The source of nourishment for algae is sunlight, warm temperatures, and excess nutrients within your water.
How Do I Keep My Water Crystal Clear?
You should take baby steps to keep the pond water crystal clear
1) Do not overfeed your fish to prevent the accumulation of waste 2) Add lots of aquatic plants to improve oxygen levels 3) Facilitate aeration methods 4) Use beneficial bacteria to eliminate the plankton that turns the water green1) 5) Remove the debris and waste manually after feeding your fish 6) Use environmentally-friendly algaecide to keep the water clear and pond scum free
Final Thoughts
Pond scum can be a nuisance if you don’t treat it timely and maintain your pond’s ecosystem. Don’t forget to aerate your ponds and add a large biofilter to keep healthy water quality and less stressful for your aquatic life. Also, the products you use should be environmentally friendly and organic, safe to use in ponds and lakes. If you have any questions about dealing with pond scum, leave us a comment below.
Picking pond fish isn’t as simple as grabbing whatever looks good at the garden center. Climate is the variable most people underestimate — a fish that thrives in a mild-winter climate can die in a harsh one, and I’ve seen that mistake made more times than I can count. There are also a couple of very popular fish that regularly end up in ponds and simply don’t belong there. In this guide I’ll walk through the 7 pond fish I’d actually recommend and explain why a few of the crowd favorites are worth skipping.
The 7Best Pond Fish
Using my years of experience, I’m listing the 7 best pond fish that stood the test of time, regardless of weather conditions or other circumstances.
It wouldn’t be wrong to say that the Koi are the king of ponds.
With their beautiful, colorful, and cylindrical bodies flexing gracefully, the Koi fish is a treat for sore eyes.
As for outdoor ponds, Koi is a perfect fit since it tends to grow very large if kept in optimal water conditions. Also, they are robust and strong fish that can withstand extreme winter and summer. However, while keeping Koi, consider the regular maintenance and upkeep of your ponds as they are much larger and difficult to maintain as compared to aquariums.
If you’re considering Koi for your garden ponds, you should know the following factors.
Cost
In the case of Koi, “The more costly, the rarer and less defective.”
Koi fish range from $15 for young to thousands of dollars for adult Koi or rare fish species. However, the price makes up for their extended lifespan. Koi, in healthy ponds, can live generally 25 – 35 years, provided that they are given nutritious food and quality water.
Size
Koi needs an Enriched Diet and a large environment to grow healthily and happily.
The ideal size for Koi ponds should be over 1000 gallons and three feet deep to provide the fish with everything they need. Most Koi Pond Kits are designed to build koi ponds to these specs
Additionally, if you’re planning to keep a shoal of fish, you will probably need a pond with over 3000 gallons.
Filtration System
The best thing about Koi is its hardiness against extreme conditions.
However, still, they are living beings that demand basic care and attention, you will need some additional installments, such as a pond filter to keep your pond Koi-friendly.
Protection in the Water
Koi are largely susceptible to predators and so you will need to cover your garden ponds with netting or electric fencing.
The best budget-friendly option is the addition of aquatic plants to provide shelter from the direct scorching heat of the Sun or deterring predators. Have your pond at least 3 feet deep is also great at keeping predators from getting to your prized pets.
That’s pretty much the gist of what you should consider before buying Koi fish for your garden ponds.
Still interested? I recommend purchasing your beautiful and healthy Koi withNext Day Koi that offers a broad variety of Koi at affordable prices.
2. Goldfish
Like Koi, Goldfish also appreciates wholesome, well-aerated outdoor ponds.
Goldfish are small, hardy fish that does well in extreme temperatures. Hence, the perfect choice for your garden ponds. I recommend keeping the following important points in mind before going for Goldfish for your garden ponds.
Proper Location
Since Goldfish are cold water fish, you should provide a decent shade to your pond for maintaining the water temperature. However, in colder climates, there’s no need to cover the ponds as the warmth of sun perfectly balances the pond environment.
Size
The size of your outdoor pond should accommodate around 20 gallons of water per goldfish. Since Goldfish are smaller in size than Koi, they do pretty well in medium-sized ponds. However, make sure the fish swims freely without bumping into other mates or ornaments.
For Goldfish, a pond depth of 18 inches is all that is needed. They will do well in 3 feet deep ponds, they are just less demanding then Koi.
Water filter system
A good filtration system is essential for Goldfish ponds that deal with waste or leftovers to avoid spikes in toxic nutrient levels and stress. Most pond kits come with high quality filtration systems.
Mates
Goldfish are very social, docile, and amiable creatures that relish the presence of other fish. However, if you have got a pond already occupied with Koi, it’s better to examine the size of your Koi before getting Goldfish, as mature Koi sized with juvenile Goldfish usually don’t get along with and might end up killing them.
All in all, Goldfish need care, love, and dedication with water temperatures around 65 and 72 degrees Fahrenheit to thrive in your outdoor pond. Personally, my favorite is the Shubunkin Goldfish.
3. Chinese High-Fin Banded Sharks
High Fin banded sharks are a popular freshwater fish species that are extremely unique and a must-have for pond keepers. And even though their name might scare you, trust me!
High Fin Banded sharks are not sharks at all!
There are your usual algae-eating freshwater fish with just a single row of pharyngeal teeth. We call them sharksbecause they have a long sharp-like fin at the top, which gives them a striking resemblance to the mighty sharks.
However, know that they require a larger pond area as they grow about 1.35 m (4 ft 5 in). Furthermore, the markings on High Fin banded sharks are majestic, making it a rewarding choice for your ponds.
They are difficult to find locally. I recommend purchasing online through one of the Best Online Fish Stores on my list.
4. Golden Tench
If you want friendly mates in the pond for your Koi, you should try Golden Tench (Source Pic).
Commonly known as the doctor fish, Golden Tench makes sure no fish in the pond falls ill. Legend has it, that the skin of Golden Tench contains an antibiotic that protects other fish from diseases.
I don’t claim that’s true, however, I know for the fact that Golden Tench cleans up water, which ultimately helps other fish to remain healthy in the pond.
Also, Golden Tench are tough fish and their life expectancy is around 15 – 20 years, making it a great fit for your garden ponds.
Here are some things you should consider before buying Golden Tench.
The depth of your pond should be at least 28 inches
Your pond should hold a good amount of aquatic plants to keep Golden Tench happy
It’s never a good idea to overcrowd your pond when keeping Golden Tench
5. Sturgeon
Sturgeon, an easy-going fish that may reach the age of over 50 or 100 years. They are popular in larger ponds and waterscapes.
At first glance, Sturgeon can be misunderstood with sharks – stronger and bigger with their mouths, underside. However, they are sensitive to sharp gravels and sand in the bottom of the pond.
The Sturgeon requires a large pond with proper filtration because they prefer a strong current. Also, a sturgeon needs special feed that sinks to the bottom with a strong odor that looks like natural feed.
If you’re thinking to get sturgeon as a beautiful pet for your ponds, here’s what you should consider.
Keep the bottom of the pond clean because Sturgeons are bottom inhabitants, and so the accumulated dirt may cause gasification, causing harm to the fish.
The Sturgeons require frequent feedings. They cannot digest most plant proteins so they need a high fish meal or shrimp meal content.
Your pond should have a depth of at least 50 inches with minimal aquatic plants
All in all, there’s a rule of thumb to determine your pond size for Sturgeons; keep the pond size 10 times larger than the size of your fish to ensure maximum safety and health.
6. Minnows
Minnows (picture source) are small fish that are great for smaller or patio pond setups. For large ponds, if you want your other pond fish to feed on something naturally, Minnows are a good choice. Minnows are an excellent source of food for other bigger pond fish that can live up to seven years and keep your pond ecosystem clean by eating larvae, reducing algae growth, and adding movement into your pond.
Out of various types of Minnows, the fathead minnow and white cloud mountain minnow the best suited for outdoors.
Fathead Minnow
Fathead Minnows display an appearance of light green or grey with a hazy spot on their dorsal fin. Fathead Minnows feed on insects, crustaceans, and zooplankton (algae), keeping your ponds clean and inviting for other fish. Therefore, they are suitable for outdoor ponds where the growth of algae is at its peak. Fathead Minnows are hardy creatures and can withstand extreme temperatures.
White Cloud Minnow
White cloud minnows are the smallest minnows you would ever find that grow up to 1.5 inches only. With their shiny green appearance and bright red fins, they add a moving effect to your backyard ponds.
Aquarists and pond owners usually keep white cloud minnow in ponds meant for frogs to be bred. White cloud minnows are omnivorous and feed on insect larvae and other aquatic plants.
Even though minnows are usually used for bait in garden ponds, there are a few things you should consider while choosing Minnows.
Minnows need plenty of Oxygen. Hence, installing an oxygenator or waterfall is highly recommended
Minnows are tiny fish and so they don’t need large ponds to survive
Add lots of aquatic plants to provide shelter for your Minnows and to maintain the water temperature.
Occasional food and treats increase the likelihood of fish survival. You can feed them fish flakes every once or twice a week
7. Guppies
Guppies are small, bright fish species that thrive in outdoor pond as well as an aquarium.
Despite their small size, Guppies take up a lot of space for nonstop swimming hours. Since guppies are tropical fish, they enjoy warm waters with a temperature tolerance of up to 68°F (20°C). Therefore, your garden pond would keep them happy as long as it’s not chilly outside.
The peak months to keep your Guppies in the outdoor pond is between April and October when the water is warm enough to keep the fish healthy.
Even though you can keep Guppies in aquariums, they enjoy garden ponds as they are avid and active swimmers. Another advantage to keeping Guppies in ponds is that they receive more sunlight and nutritious food, keeping their skins bright and more colorful than ever.
Therefore, if you love small pond fish that add life to your pond, I suggest that you go for Guppies. There are a few things you should know about before considering Guppies as your pond inhabitant.
Guppies enjoy clean water and so, the water filter is a must
If you’re looking for long-term investment, note that they might not be the best choice because of their low life expectancy — 1 to 3 years
Guppies are small fish species, but they require ample space for swimming around the pond, which makes them highly suitable for pond life
Guppies are easy prey for the predators. Much larger pond fish will eat them
You would need a fishnet to inspect the Guppies for potential diseases or overall health
What You Should Avoid
I know you might not agree with my disapproval of these fish species because they are popularly kept in garden ponds for so long.
Know that it’s not that I’m completely against keeping these fish species, it’s just that I don’t find it suitable for pond life.
Fancy goldfish come in a variety of types and make great aquatic pets. Check out these What You See Is What You Get (WYSIWYG) goldfish in the link below!
Fancy goldfish like Orandas have long, flowy fins with celestial color patterns to keep the visitors in awe. However, No matter how ‘fancy’ it gets, keeping fancy variants in ponds is a no-no.
I’ll tell you why.
Fancy goldfish are known for their slow, clumsy nature which is ill-suited for outdoor ponds, especially if you have other fish in the pond, such as Koi or single-tailed goldfish. Koi and non-fancy Goldfish will outcompete Fancy Goldfish for food. They are slow swimmers and will get left behind, starving for food. They are also highly prone to infections and diseases.
All in all, their fins are delicate that are easily damaged by other pond fish.
Therefore, I strictly advise you to avoid fancy goldfish and pick other hardy counterparts.
2. Catfish
Keeping aquatic plants in ponds is every aquarist’s dream, and so is mine.
Which is what makes Catfish a bad fit for a pond. That’s because they are voracious eaters and destroy aquatic plants, turning the water cloudy with debris and plant waste.
FAQS
What kind can I group together in the water?
You have to look and research for fish that are hardy and can survive extreme temperatures. Also, fish that can adapt to indoor-outdoor life easily are highly recommended for ponds. Additionally, the temperament of fish matters the most as not every fish gets along with others really well.
The best pond fish are: 1.Koi 2.Goldfish 3.Chinese High Fin Shark 4.Golden Tench 5.Sturgeon 6.Minnows 7.Guppies
What kind can live in small outdoor water areas?
For small ponds, choose a variety of fish that is small and doesn’t require much space for swimming, For very small ponds Fathead Minnows and guppies are a good choice. Goldfish are also a great addition to smaller outdoor ponds.
What type can survive winter?
The fish that can survive winters in outdoor ponds are
1.Goldfish 2.Fathead Minnows 3.Koi
Can aquarium fish survive in this type of water?
Absolutely they can if provided with the right pond ecosystem and water conditions. Even though this factor varies from fish to fish, aquarium fish are usually tropical, therefore prefer warmer temperatures.
As long as you maintain the water temperatures, your aquarium fish should thrive in a pond.
What kind can live with a goldfish?
Goldfish is suitable for ponds and makes the best mates with the following two pond fish. 1.White cloud minnows 2.Young Koi
Final Thoughts
Fish are graceful, scaly creatures that add colors to your backyard ponds. Pond fish, despite being healthy and hardy, need some extra and special care regarding their habitat and food.
In this article, I’ve listed seven of the best pond fish species with their recommended care to add value to your pond.
Shubunkin goldfish might be the most underrated pond fish in the hobby. I’ve covered dozens of goldfish varieties over the years on our channel, and the shubunkin always stands out — that calico patterning, with its mix of blue, red, orange, white, and black on nacreous scaling, is genuinely unlike any other goldfish. And unlike the slow, round-bodied fancy varieties, shubunkins are fast, hardy swimmers built for outdoor ponds. After 25 years in this hobby, they’re one of my top recommendations for pond keepers who want color, movement, and hardiness without the demanding requirements of koi. This guide covers everything: the different shubunkin varieties, tank vs. pond setup, water parameters, diet, and lifespan.
A Brief Overview Of The Shubunkin
Scientific Name
Carassius auratus
Common Name (Species)
Shubunkin Goldfish
Family
Cyprinidae
Origin
Japan
Diet
Omnivore
Care Level
Easy
Activity
Active, social
Lifespan
Up to 30 years
Temperment
Peaceful
Tank Level
All Areas
Minimum Tank Size
75 Gallons
Temperature Range
65 – 72 Degrees F
KH
150
pH Range
6.0 – 8.0
Filtration/Flow Rate
Moderate
Water Type
Freshwater
Breeding
Egg-layers, Easy to breed
Compatibility
Peace commuity species
Ok, For Planted Tanks?
With Research
Origins and Habitat
Shubunkin Goldfish are also known as Calico Goldfish, meaning multicolored. As a type of Goldfish (Carassius auratus), they’re descendants from the wild carp living in Asia today and were first bred in Japan. The Shubunkin earns its name from a town in Japan called Shubuta where they were first bred. These fish were first brought into the West in 1882 by James Meehan, who was a curator at the London Zoo.
As for habitat, Shubunkins are a member of the Cyprinidae family, which means they like to live in slow rivers, lakes, ditches, or ponds. In Asia, fish kept in ponds typically have a habitat moderately decorated with plastic plants, driftwood, and rocks.
What Does They Look Like?
The Shubunkin is similar to the Common Goldfish and the Comet Goldfish in appearance and is crossbred from these two, as well as the Calico Telescope Eye Goldfish. They have nacreous scales which are pearly in appearance and look like a mix between transparent and metallic scales.
The Calico Goldfish has overlapping patches of white, gray, red, black, and blue colors that can be seen on their long, flowing tail fins. The most valued color of a Shubukin is blue, and this is also the rarest color. These fish are usually heavily spotted as well.
Typically, people divide Shubunkins into three different types:
London
The London Shubunkin goldfish typically has a slender body and shorter tails that tend to be more rounded, similar to the Common Goldfish.
American
The American Shubunkin is also known as the Japanese Shubunkin. An American Shubunkin has longer fins and a sharper fork tail, and looks more like Comet Goldfish than the other types.
Bristol
The Bristol Shubunkin is quite rare and has a B-shaped tail that stands out. Also, the Bristol Shubunkin tends to be longer and broader than other types.
Shubunkin Goldfish Vs. Koi
Below is a good reference video from J Lo on the difference between Shubunkin Goldfish and Koi. As you can see, the Shubunkin compliments as Koi with it’s varied color and fin shapes. They look amazing together in a pond! In some Koi keeping circles, the Shubunkin is often label a “poor man’s Koi”. The way I see it, they remind me of Butterfly Koi and allow you to keep the purity of the Koi line if you do not want to stick to Traditional Koi.
How Big Are They?
One common feature among the Goldfish freshwater species is that they grow based on their surroundings. Typically, Shubunkin Goldfish reach a size between 6–12 inches, but if you keep them in a small space, they’ll be smaller.
These are excellent pond fish as well, since they can grow up to 14–18 inches if they have enough room, and there have even been reports of them reaching lengths beyond 18 inches.
How Long Do They Live?
Depending on their environment, Shubunkin Goldfish are hardy fish and typically have a lifespan of 10–15 years with proper care.
Shubunkins that are kept in ponds usually live even longer since they have lots of space to explore and live a happy life. Some even have a lifespan of up to 30 years.
Temperament and Activity Level
These fish are super social and like to hang out in groups. They’ll likely spend their days exploring their aquarium or pond, meaning that they’re very active. Like most Goldfish species, they’re fast swimmers and do well paired with other fast-swimming fish.
They also like to eat whatever they can get their hands (or mouths) on, and they often scavenge for food at the bottom of the tank. Therefore, the only type of aggression you might encounter with Shubunkins is that they’re quick to steal food.
What Are Good Tank Mates?
While they can live alone, the Shubunkin thrives in tanks with other fish, and they make a good addition to community tanks. Some species suit them better than others, however.
Good Tank Mates
These quick swimmers pair well with other fast-moving fish that thrive in cooler waters as the Shubunkin does. They do well with other species of Goldfish as well as many other species. Here are some suggestions for fish to pair with your Shubunkin Goldfish:
Since Shubunkin Goldfish tend to steal as much food as they can manage, it’s best not to pair them with slow-moving and shy species, as they might have a hard time getting enough nutrition.
For the more experienced fish owner, you can pair your Shubunkin with slower swimmers as well. Just make sure to watch and feed your fish at different times, starting with the fast ones and then moving onto the slower ones.
Shubunkin Goldfish don’t pair well with aggressive fish such as Tiger Barbs or Cichlids since they don’t like fighting. They also do not pair well with Fancy Goldfish because they are very fast compared to them. Fancy goldfish will struggle to eat enough with an athletic Shubunkin in the tank or pond.
Finally, some tropical fish species might not be the best mates for Shubunkin, since they prefer cooler waters.
What Do They Eat?
Shubunkins are omnivores and eat almost anything you drop into the water. But for them to get all the nutrition they need, it’s best to feed them high-quality dried food such as flakes and pellets.
Another great thing is that these fish are scavengers and will eat up whatever they can find at the bottom of the tank, such as plant material and detritus. Just keep in mind that they might uproot live plants while they’re at it.
What About Live Foods?
Like all types of Goldfish, Shubunkin feed on insects and small crustaceans. Some live or frozen foods to feed them occasionally include Daphnia, blood worms, tubifex worms, krill, and brine shrimp.
How Much and How Often to Feed
You should feed your Goldfish twice a day and give them as much as they can eat for two minutes each time. For the everyday staple meal, pellets or flakes are your best choices. Occasionally, they should also get a treat in the form of live or frozen food.
Once or twice a week, you can also give them some fresh vegetables from your kitchen, such as spinach, lettuce, or cucumber, but peel and blanch them first.
Tank Requirements
While the Goldfish Shubunkin is rather easy to take care of, you need to consider the type of tank it’s going to live in as well as how to decorate it.
Tank Size
There is lots of misleading information out there in regards to keeping a Goldfish. While your Shubunkin Goldfish will stay alive in a tank that’s 15–20 gallons, it’s too small for them to live a healthy life. Instead, you should invest in an aquarium that’s with a minimum tank size of 75 gallons to give them room to swim and search for food.
As your fish will grow depending on how much space it has to move around in, the bigger the tank, the better. Shubunkins live the happiest in wide-open spaces where they can roam around and are great to keep as pond fish.
If you add more fish to your aquarium, remember to increase the tank size by 10–15 gallons per new member. A 75-gallon tank should only keep one Shubunkin Goldfish.
Tank or Pond Setup
Since this Goldfish type typically lives in slow-moving rivers or lakes, you want to make sure that your tank has low to moderate water movement. Generally speaking, a water filtration system provides enough movement in the tank. You can invest in some air stones if you wish to help keep the oxygen at reasonable levels.
Shubunkins aren’t picky, and most substrate works with this fish. The best choice is medium-sized gravel since they’ll be able to sift through this material and look for food. You can also opt for a bare bottom pond, a favorite setup for Koi Pond setups and for ease of cleaning.
You can also invest in some underwater live plants for a more natural-looking habitat. Keep in mind that this fish is a quick eater, so it’s likely to unroot almost anything you plant. Your best bet here is fast-growing plants such as Hornwort, Java Fern, and Anacharis.
In terms of other decorations, Shubunkins aren’t picky and won’t mind plastic or silicone plants. The most important thing for them is to have a good amount of swimming space, so you can use some driftwood or rocks in your tank or pond but keep it minimal.
Finally, you need to provide a sufficient amount of light. This will help your Shubunkin Goldfish maintain its natural sleeping pattern. There are many tanks on the market that have built-in LED lights with different settings for day and night that could be a good investment.
Water Quality
Filtration
The Shubunkin is a messy fish and has a high waste load, which means that you need a good filtration system in your pond or tank. Your best bet is a filter with biological media. Without a filter, nitrate and ammonia levels in the water might reach unhealthy levels. However, also remember make that water change frequent and clean the tank or pond.
When picking a filter, look for one that can clean all the water in your tank or pond. If it lacks in this aspect, you’ll end up with unfiltered water. I recommend a high quality power filter or opt for a canister filter.
Water Parameters
One good thing with the Goldfish species is that it tolerates changes in water conditions much better than more sensitive tropical fish, for example. They can even survive in temperatures a few degrees over freezing, which is why they make such great pond fish. However, you should invest in a water heater if you plan on keeping your Shubunkins in an outdoor pond during the winter.
Here are the ideal water parameters for Shubunkins:
Since Goldfish are messy types of fish, you need to clean out their tank more frequently than many other species. Keeping your aquarium clean is the most efficient way to prevent your Shubunkin from getting sick or developing any fish diseases.
Every one to two weeks, you should clean your aquarium. First, wipe off the outside of the tank with an ammonia-free cleaner and a cloth, then shake the plants inside the aquarium to get rid of debris. Also, scrape the inside of the glass to remove algae, and then take a break for 15 minutes. Finally, siphon the substrate to further remove debris and then perform a 25 percent water change.
Test Water Conditions
You should check the pH level, hardness, and water temperature frequently, especially when setting up your tank and after changing the water. Make sure that the levels are within the spectrums stated in the section above.
Other things you need to test are the levels of ammonia, nitrite, and nitrate. For Shubunkin Goldfish, the levels should be the following:
Ammonia: 0 ppm.
Nitrite: 0 ppm.
Nitrate: <40 ppm.
In order to test the water conditions, invest in an aquarium water test kit. A good rule is to test the water conditions on a monthly basis. At the same time, make sure you also change the filter media.
How To Set Up Your Fish Tank
Before your Shubunkin moves into its new home, you need to set up the tank. Make sure you have a clean aquarium with the proper water conditions and temperature for your fish to start with, and it’ll be easier to tweak them later.
How To Set Up a Fish Tank
Follow these seven steps to set up the fish tank for your Shubunkin Goldfish.
1. Clean the Tank
First of all, wipe off any dust with a damp cloth, never use any household chemicals or old cleaning equipment to clean the inside of your tank. If you have an old aquarium that needs some extra cleaning, you can use vinegar to dissolve dirt.
2. Position the Tank
Now it’s time to position your tank. It’s best to put it into place before filling it with water since it’ll get heavier. Make sure that it’s out of direct sunlight and placed on a stable stand. It should also be level.
3. Fill Tank With Substrate and Water
After this, it’s time to fill the tank with the substrate. For the Shubunkin, use medium-size gravel and rinse it with cold water before you fill the aquarium.
Follow a ratio of 1 pound of substrate per gallon of water for a 1-inch thick bed, or 2 pounds of substrate per gallon of water for one that’s 2 inches thick. For a 75-gallon minimum tank size, this means 75–150 pounds of substrate. For 125 gallons, you’ll need 150–300 pounds.
When the gravel is inside the tank, fill it with water. Shubunkin Goldfish are freshwater fish, so you’ll need to use fresh water. A tip to prevent the running water from spreading out the gravel is to place a bowl or saucer at the bottom of the tank and pour water onto it. After filling the aquarium, add dechlorinator to the water, following the instructions on the bottle.
4. Install the Filter
You can choose to use an external or internal filter, but we recommend an external one since it filters water more efficiently and has more space for media. The best choice for Shubunkins is to use a filter with biological media.
Set up depends on the brand, so look at the instructions. You typically place it within the sand below the tank. Before you plug it in, fill it with water to start the filtering process. When you install it, make sure that the inlet and outlet tubes are straight so that water flows through them easily.
5. Decorate It
When you’re done with the basic setup, it’s time to decorate the tank. Remember that Shubunkins like to have lots of space to swim but that some plants and other items are okay to add. Rinse every item before you place it into the tank to prevent dirty water.
Most plants are fine being buried in the gravel, but some species such as Java Fern need to be attached to some driftwood first and then placed into the aquarium.
6. Cycle the Tank
Before adding any fish, you need to cycle the water in the tank to build up bacteria in your biofilter that can convert ammonia into nitrites and then nitrites into nitrates. This is to prevent toxins from building up in the water.
Simply add some ammonia into the tank (I recommend using Dr. Tim’s Ammonia) , following the instructions on the bottle. You need to check the levels of these substances frequently. When they reach 0 ppm, your tank is fully cycled. This might take a few weeks, so prepare your aquarium well in advance. For bacteria in a bottle, check out Fritz Turbo start.
Fritz Turbo Start is known in the industry as the fastest acting nitrifying bacteria you can purchase. This 700 version is specialized for freshwater tank and has my highest recommendation
Now your Shubunkin Goldfish is ready to move in. Since fish can be sensitive to changes in water conditions, you want to acclimatize your Goldfish by slowly adding half a cup of water from the tank into its bag and wait for 5 minutes between adding another half a cup.
When you’ve acclimatized your Shubunkin, use a net to transfer it to the tank. Discard the remaining water in the sink and observe your new friend for the next 24 hours to make sure it eats and settles in well.
If you opt to quarantine your fish (which I recommend), consider quarantine for 30 days in a separate tank.
Health and Disease
While this is a hardy fish, that doesn’t mean that it’s immune to freshwater fish diseases. So, let’s talk about how you recognize a healthy as well as an unhealthy Shubunkin.
Signs of Good Health
A healthy Shubunkin swims constantly and eats regularly. It looks shiny, its colors are vibrant, and the scales are intact and not damaged. They also get along well with their tank mates and frequently explore the tank, digging and scavenging for food.
Signs of Ill Health
Some signs to be wary of include:
White spots on its scales.
Swimming sideways or just floating around without swimming actively.
Only staying close to the surface or the bottom of the tank.
Staying in one corner.
Not eating.
Constipation.
Injured scales.
Rubbing its scales against tank walls and plants.
Common Health Issues and Treatment
Ich is one of the most common diseases for freshwater fish. This is a parasite that appears as white spots on fish scales, and if left untreated, the white wounds can lead to bacterial infections and kill the fish. If you notice your Shubukin rubbing itself against surfaces and developing white spots, take it to a vet immediately. There are several products you can add to your tank to treat Ich.
Swim bladder disease is another issue Shubunkin Goldfish can suffer from. Signs include swimming sideways, staying close to the surface or the bottom of the tank, or swimming in strange patterns. A home remedy against swim bladder disease is to feed your fish blanched peas, but your best bet is to seek help from a professional.
Other diseases that can affect this Goldfish type include fin rot and skin flukes that other parasites or fungus cause. If your Shubunkin shows signs of ill health, seek advice from a vet.
Breeding
Shubunkin spawns during the spring and to start this process, move the fish into a separate breeding tank and drop the temperature to 60 degrees Fahrenheit. Then warm the water in the breeding tank by 2–3 degrees F every day until the temperature reaches 72 degrees F.
You’ll see the males’ colors begin to intensify, and they’ll start chasing the females. After a few days, they’ll push the females into the plants, where they’ll lay up to 10,000 eggs. After a few hours, spawning is done, and you need to remove the adult fish from the tank, or they’ll eat the eggs.
After 4–7 days, the eggs will hatch. Proceed to feed the baby fish with fry food until they reach 1-inch, and then put them into the adult tank.
Are Your They Male or Female?
You probably won’t be able to tell males and females apart until they reach maturity. During the breeding seasons, males will develop breeding tubercles on their gills and heads, which will look like white spines. The females will get rounder bellies when eggs develop.
Availability
You’ll find Shubunkin Goldfish available to buy at almost any pet store, fish supply shop, and even online. Not everyone has access to a quality local fish store. For those who do not have a good local fish store, check out my best places to buy fish online post. To save you time, for Shubunkins, I would recommend NextDayKoi for purchasing the quality quality Shubunkins.
The Shubunkin Goldfish is an active, beautiful, and hardy species that socializes well with other freshwater fish and can be kept in outdoor ponds or indoor tanks. They’ll make a great addition to your aquarium as long as you give it enough space to swim around and maintain healthy water conditions in the tank.
📘 Want to learn more? This article is part of our complete Freshwater Fish Guide — your ultimate resource for freshwater species, care tips, tank setup, and more.
Cloudy water is one of the first problems new fishkeepers run into — and honestly, one that experienced hobbyists still deal with from time to time. I’ve troubleshot this in my own tanks more than once over the years. The frustrating part is that cloudiness has several different causes, and treating the wrong one can make things worse. Once you know how to read the type of cloudiness, though, most cases clear up quickly.
Dealing with a cloudy fish tank? If you have dealt with this, you will know it is one of the most frustrating things that can happen in the fish tank water. I get your pain, as I have been in the hobby for over 25 years. While the problem is not as common on the saltwater tank side, it is far more common for freshwater tanks.
There are several reasons for cloudy water in freshwater tanks. In today’s post, I’m going to go through the 7 most common reasons for a cloudy fish tank, and 5 ways you can go about resolving the issue. Knowledge is power in this hobby and I’m here to empower you! Let’s get started.
Key Takeaways
The most common reason for a tank that is murky or water cloudy is having a new tank
Proper maintenance and stocking are good ways to prevent a tank from becoming cloudy
If your tank needs to be cycled, consider bacteria in bottle products
Glass can also make your tank look hazy, clean the inside and outside of your glass
Why Is My Fish Tank Cloudy? The 7 Most Common Reasons for Cloudy Water
Murky water sucks. It makes your tank look ugly and unappealing. Fortunately, there are 7 common reasons for it occurring, they are:
Check out our video from our YouTube channel below. We go into more detail in the blog post. Free to follow along with both.
1. New Aquarium and Murky Water
Cloudy water in a fish aquarium and a new tank go hand in hand with our hobby. It is very common for this to happen when you are cycling a tank or have a newly-cycled tank. When you start adding livestock to the tank, you introduce new sources of nutrients and waste to the tank. If you add too fast, the system is thrown off balance.
As a result of this imbalance, the beneficial nitrifying bacteria in your tank reproduce like crazy in order to digest the excess nutrients. The massive amounts of new bacteria create a cloud, which results in your water looking cloudy. The best way to fix cloudy water issues is patience. Just stop adding fish and let your tank settle down. It should clear up on its own.
During this time, it is a good choice to do a water test with an aquarium test kit. You will want to look at the big three new tank parameters, which are going to be Ammonia, Nitrite, and Nitrate. Ammonia and nitrite are going to be your biggest concerns with a brand-new tank.
2. Overfeeding
If you have an established tank, this is a common reason for tank water in your aquarium to become cloudy. It’s understandable to want to feed your fish all the time. After all, they usually greet you when they see you with their cute little faces. They look at you, and the top of the tank waiting for you to feed them. If you start feeding a lot, your system gets thrown off balance and a bacteria bloom occurs.
Lay off the feeding for a bit and test your aquarium water. It’s actually a good thing to have your fish go without food for a day to let their digestive systems settle down. Excess food is problematic and can lead to dirty aquarium water. The only fish you don’t want to do this with would be fish that lack stomachs, like goldfish. Look out for automatic fish feeders as it is easy to overfeed with them.
3. Too Many Fish
Too many fish in the tank is going to lead to a dirty-looking aquarium. Adding them too fast will also cause the water in the tank to look clouded. Slow yourself down with additions and avoid adding any more fish until you get this problem under control.
When planning out fish, a really great site to get an overview is AdAdvisor. Just plug in the fish you want to add and run the calculator. As a rule of thumb, you do not want to increase your fish population by 50% and you want to spread out your additions to 4-6 week timelines so your tank has time to balance out. The only time I feel where you can get away from this is if you have done a dry start for a planted aquascape. Here is the link to the calculator.
4. Inadequate Filtration
Filtration is a major cause of this problem in an established tank. The main culprit here is going to be your mechanical filtration. Cheaper power filters tend to use coarse foam, which finer particles will pass through. When it comes to canister filters, the issue may be the choice of foam. Fortunately, high-end brands like the Biomaster Thermo will have multiple foam densities you can choose from. If you have a heavily populated tank, you might want to consider going for a finer foam.
If you are using a power filter, you might want to consider adding a layer of filter to improve your mechanical filtration. I prefer to use the blue floss that is put in canister filters and sumps. You can purchase it in bulk online and then cut it to fit.
Decaying matter can cause murky water in your tank and will get dirty fast. The biggest piece of decaying matter is going to come from a dead fish. Check your tank every day and see if all the fish you own are accounted for. Sometimes, if your fish are breeding, you may have dead fry that is dirtying up your tank water.
The other factor is going to be chunks of uneaten fish food and decaying plant matter. Check your substrate for both and trim off any decaying leaves you see on your live plants.
6. Your Glass
Your glass can be a source making your tank water look murky. The main cause is from bacterial biofilm. Biofilm looks the most obvious on aquarium driftwood like in the photo below, but it also grows on your glass.
This biofilm will stick to your glass and give it a cloudy look if left unchecked. On larger fish tanks, your tank will have a slight tint to it that will make it look a little darker. Low iron rimless aquariums and acrylic tanks will have better clarity and show better than traditional glass tanks.
7. Your Subtrate
New substrates can cause cloudiness or milky water that will look hazy if they are not rinsed. Always make sure you wash your substrate thoroughly before putting it in your aquarium. The other cause can be an existing substrate that is stirred up. Stirring up too much of your substrate at once can cause the release of additional nutrients, which will cause a bacterial bloom or cause discoloration of your aquarium water causing it to look milky. If you are going to stir your substrate, it is best to do so when gravel vacuuming so you get most of the debris that comes out
5 Ways To Deal with It
Alright, so we know the 7 common causes of cloudy aquarium water. Let’s talk about what we can do about it. It’s actually simpler than you think and here are 5 ways to get rid of it:
Proper Tank Maintenance
Making Sure Your Glass Is Clean
Proper Filtration Maintenance
Cycling Your Aquarium
Improving Quality Of Light Duration
1. Proper Aquarium Maintenance
Proper maintenance on your tank is going to be the #1 solution for white cloudy aquarium water. Most problems in this hobby can be resolved with a water change. A water change can bring balance back into your aquarium and balance the water chemistry. In most cases, clouded water is going to be a result of a bacterial bloom due to spikes in nutrients. Doing a water change will remove these nutrients and get everything in balance. If the problem is more serious, you will need to do more water changes over time to get everything back to where it should be.
In extreme cases, 40-50% water change every day or every other day is not uncommon when dealing with a serious nutrient spike that causes a tank to become dirty. Gravel vac your substrate. If you have a fine substrate, surface skims it with the gravel vac to remove the top layer of debris.
2. Making Sure Your Glass Is Clean
Both the outside and inside of your glass matter. Outside of the tank, water stains on the glass can make your tank look like there is hazy water when trying to look in. Work with a safe cleaner, like white vinegar, or better yet, use a DIYers secret weapon – Magic Erasers!
Yes, that’s correct. The original Magic Eraser by Mr. Clean has been a blessing for acrylic aquarium owners for many years and goes unnoticed in our hobby. I’ve used it on the outside of the glass with great results. Rumor has it that it works inside the tank as well, but I’m not that brave ?. Still, I’ve had hobby friends tell me that it’s like cleaning with a plastic scraper and is completely safe. I’ve only had personal experience on the outside. For the inside, I prefer a razor blade for glass or a Flipper Cleaner.
I love the Flipper. Just put it in your aquarium and clean from the outside. You can even move it to other sides of the tank with its flipper feature. Simply Amazing!
The Flipper is amazing for cleaning the inside of your tank. It’s been my go to for years. It is also a great way to get your kids involved, as they can clean from the outside without having to put their tanks in the tank. There is also a cool factor with flipper the scraper when you move it to the other sides of the tank. It will scrape off the toughest of algae from your glass and make your glass look spotless!
3. Proper filtration maintenance
If you slack on filter maintenance, this can lead to dirty tank water problems. Your mechanical filtration is not operating at its maximum efficiency. Get into those filters and replace your filter floss and wash out your sponges. You should be changing out your filter floss every other week. For all the filter media you clean, make sure you clean them out with your tank water. If you use tap water or RO water, you risk losing those beneficial bacterial colonies in the process.
Clean out the piping in your power filters and the tubing in your canister filters. If you have mechanical filtration, consider replacing it for a fresh set. Sometimes upgrading to a premium chemical filtration media like chemi-pure will help, though it is expensive to do. All this maintenance pays off because your filters will operate at their best, keeping your tank water looking crystal clear.
4. Cycling Your Aquarium
If you have a new tank, cycling your aquarium is your first step to avoiding having a brown water tank. Reduce your feeding and don’t add any more fish until the problem goes away. Test your water for ammonia and nitrite levels and do a water change to reduce the excessive nutrients.
Another thing you can consider if you have a newer tank is getting used filter media from a disease-free tank. This will import beneficial bacteria that will jump-start the cycle. You can also opt for using beneficial bacteria-in-a-bottle solutions like Fritz Turbo Start 700.
Fritz Turbo Start is known in the industry as the fastest acting nitrifying bacteria you can purchase. This 700 version is specialized for freshwater tank and has my highest recommendation
If you are looking for a longer-term solution, a UV Sterilizer is a great addition for not only water clarity purposes but also for disease mitigation. Check out my article on Aquarium UV Steriliziers for more information on what makes a good one. There are many out there, and only a few that I would recommend.
5. Improve quality of light and Reduce Lighting Times
Poor lighting can really dull out your aquarium and give it a hazy look. This is more common with LED lighting as the light is more focused than T5 lights. Because the light is focused, it can lead to a disco effect and shadows can dull out your tank. I prefer an LED fixture that expands to the length of the entire tank like the Twin Star or Fluval planted tank led.
If you have T5s, it may be time to replace the bulbs. Getting new bulbs will brighten up the aquarium and make it look more lively and clearer. T5s in general also tend to display a clearer tank, given their even spread of their light. You can get close to this with LEDs, but only with higher end LEDs, like the ones I mentioned previously.
Reducing your lighting time can also help. This will slow down the reproduction of algae which will keep your glass and water clear.
Common Questions (FAQS)
Why Is My Aquarium this way?
A tank can get dirty or look clouded for one of the 7 common reasons. You have a new tank, you are overfeeding, you are overfeeding your fish, your tank is overstocked, you do not have enough filtration, there is a dead fish or decaying matter in the tank, your glass needs to be cleaned, or you have put in new substrate.
Is Dirty Water Bad For Fish?
The appearance of clear cloudy aquarium water is not bad for a fish, but is a sign of imbalance and possibly a greater problem. The first thing you should do when you see hazy water would be to assess your water quality by testing your aquarium water. Get a baseline of your nutrient levels and take action as needed. Usually a water change will help put things back in balance.
How Do I Make My Aquarium Water Crystal Clear?
Great filtration, a good aquarium maintenance schedule, and keeping your stock levels stable are the best ways of making your aquarium water crystal clear. You can also purchase equipment and supplies that can assist greatly like an aquarium UV sterilizer.
Will A Filter Clear Hazy Water?
A filter can fix cloudy aquarium water. If your tank is new, your filtration system needs to catch up to balance your tank. If you have a heavily stocked tank, you may lack filtration and may need another filter to alleviate water that looks cloudy or hazy. Other times, the filter is the problem because it’s dirty and needs to be maintained.
Can Driftwood Make My Aquarium Murky?
Driftwood can make a tank look cloudy or murky. However, the most common issue with driftwood is it can turn your aquarium water a tea like color due to the release of tannins. Some aquarium owners like this look, I personally don’t. If you want to avoid that tea color, purchase a driftwood with a low tannin count like Manzanita or Tigerwood
Conclusion – Share Your Experiences
Implementing a proper aquarium care routine will help to avoid cloudy water tanks. Various types of fish that can also make the water cloudy such as Yellowfish and tropical fish, so you have to make a regular cleaning schedule to maintain your aquarium. Tropical fish also require specific water and temperature conditions, or they will get sick. Sand and other equipment can also affect the water in your aquarium when not properly cleaned.
Have you dealt with dirty water before? How did you clear it up? Share your experiences below and let’s start a conversation! I hope you found this article helpful. I also love to hear from my readers. We have all dealt with this before and we can work together as a community to help others. Thanks for reading and see you next time!
Marine velvet is the disease I fear most in a saltwater system — more than ich, more than bacterial infections. I’ve seen it kill entire tanks within 48 hours when it goes undetected, and because the early symptoms are so easy to miss, it often does. Running a 125-gallon reef for years, I’ve learned to spot the signs early and act immediately. If you keep saltwater fish, this is the one guide you can’t afford to skip.
Marine velvet is one of the most deadly diseases in the saltwater hobby — it kills faster than ich and is often misidentified until it’s too late. I’ve seen it wipe out entire tanks, and I’ve helped hobbyists navigate outbreaks after they reached out through my YouTube channel. The key is recognizing the early signs and acting immediately, because once fish are in late-stage velvet, your window to save them is very narrow. This guide covers exactly how to identify marine velvet, differentiate it from ich, and the treatment protocols that give your fish the best chance of survival.
What You Need To Know (The Facts)
Name
Amyloodinium ocellatum
Common Treatments
Chloroquine Phosphate or Copper
Short-Term Treatment
Acriflavine or Formalin bath
Causes
Transferred from infected fish, corals, or water
Fallow Period
6 weeks
Common Symptoms
Numerous white dots on the body, fins, flashing, swimming to flow of wavemakers, erratic swimming behavior
What is Marine Velvet? (Amyloodinium ocellatum)
Marine Velvet Disease, scientifically known as Amyloodinium ocellatum is a dinoflagellate (not the same brown stuff mentioned in my other post). It is well known for killing prized saltwater fish in less than 24 hours, and it spreads the most during the warmest months of the year in the aquarium trade. If you are well versed in the hobby, you will often hear of increased cases of this disease during the summer. It makes summer one of the riskiest times to purchase fish locally or online.
Because it is a dinoflagellate, it has unique features compared to other diseases in our hobby. It is often mistaken as ich (Cryptocaryon irritans), and because of this, you should learn the differences between the two.
Marine Velvet vs Ich – The 4 Key Differences
It’s very easy to confuse these two diseases. I’ve heard many folks say, “ich wiped my tank.” However, their stories, of how quickly everything happened, made me suspect it was actually Velvet. Let’s go into the four main differences so you know what you are tackling. They are:
The number of spots
Type of free swimmers
Life cycle
Time of infection
1. The Number of Spots
Your first indicator is usually the number of spots. Ich’s white spots are spread out and easy to count. With Velvet, the spots are so numerous it’s difficult to count them all. It’s almost as if the fish was dusted with white power (source). You can see an example of both diseases below. Note how the purple tang has spots spread out while the Achilles tang has spots all over its body, including the eyes.
Marine VelvetIch
2. Type Of Free Swimmers
Because Marine Velvet disease is a dinoflagellate, the free swimmers are called velvet dinospores, while ich’s are called theronts. While this is a technical term, one thing to know is that dinoflagellates feed off sunlight which makes it susceptible to blackouts, UV, and Ozone – though once you have an outbreak you will need to take more extreme measures to fight it off. All of these will control the spread, but will not cure an already infected fish!
3. Life Cycle
Velvet averages a 4-day life cycle and there are more attacking free swimmers than ich. This is why they can overwhelm and kill fish so fast. Ich’s life cycle can be as long as 2 weeks.
4. Time Of Infection
Because Velvet is a dino, it remains infective for up to 15 days. This is because as dinos, they can feed off sunlight. Ich is only infectious for up to 48 hours. The fact that it remains infective longer and attacks in larger numbers and longer is what makes this disease far deadlier than ich.
Life Cycle
As I mentioned before, the life cycle is only 4 days and starts when a Velvet dinospore attaches to a fish’s skin. The attached velvet dinospores are then called trophonts. This trophont will feed on your fish for several days before detaching. Sometimes, the trophonts are so numerous and overwhelming that it will kill the fish before it shows any symptoms.
Once the trophont detaches, it is called a tomont. These tomonts divide until they burst. When they burst, they become new velvet dinospores. These dinospores then attach to a new host, starting the lifecycle all over again.
Let’s illustrate this lifecycle with an image. The image below is from Dr. Fish himself, Humblefish. He is the go-to for all marine fish diseases in our hobby. Check out his site for further info on all other saltwater ailments and treatments.
Treatment (How To Cure)
Marine Velvet disease needs to be treated ASAP. You need to treat it in a quarantine tank as all effective medications against it are not suitable to be used in reef tanks. There are several steps you will need to take:
Get the proper medication
Get a test kit
Set up a quarantine tank
Perform short-term relief procedures
Perform treatment procedures
1. Get The Proper Medication
Step number 1 here. The preferred treatment option for Velvet is chloroquine phosphate. Unfortunately, due to the COVID-19 pandemic and its mass usage for treating malaria1 , it is getting difficult to find. Even with a vet, most are now reluctant to prescribe it to a hobbyist. Chloroquine phosphate is highly effective and can be used with no ramp-up time. However, given its lack of availability, it will not be your primary treatment option.
Copper is your new go-to treatment option. We will need to do some additional steps to make it work against Velvet. There are two types of copper: ionic and chelated. Ionic copper is what you will find in most fish stores due to the availability of SeaChem Cupramine. It has a shorter range of therapeutic levels (0.4 – 0.5 mg/L) and degrades fast. It’s not my preferred choice.
Chelated copper is stable and has a larger range of therapeutic levels. Fish are more tolerant to it than ionic copper, and it is generally more effective against diseases than ionic copper. My preferred choice for chelated copper is Copper Power by Endich. Make sure you get the blue version, as there is a green version that is exclusive to freshwater Velvet. The effective range for chelated copper is 1.5 to 2.0 PPM. If you want research-backed info of copper medications – see this write-up from the University of Florida (UF is also the source of my featured image).
Unfortunately, most stores will not have Copper Power in stock. Amazon Prime is your best bet for fast delivery. If you are researching this article and do not have a fish that is sick, I would purchase some now. It has a long shelf life.
2. Get A Test Kit
If you manage to get your hands on chloroquine phosphate, you are in luck. You do not have to use a test kit for CP because there is none available to the hobbyist. Only lab-grade equipment can test for CP and that is way out of the price range of most people, and also not available to purchase unless you are a lab tech.
If you get copper, you will need a test kit. There are many factors with copper that call for a test kit. For one, copper gets absorbed by lots of things in your aquarium – your filter, the silicone in your aquarium, and any decorations. This is why hospital tanks are set up with PVC piping and simple power filters or sponge filters.
Of all copper test kits available, the best out there is the Hanna Checker
3. Set Up A Quarantine Tank
A proper quarantine (AKA hospital tank) is a must. You will need to remove all fish from your display tank as the disease will need to be starved out of your display. More on this later when I explain the fallow period. Depending on the number and size of fish, most people will be working with a 10, 20L, or 55-gallon tank when treating for Marine Velvet disease. I prefer the 20L gallon since it is a nice combo of size, space, and cost-effectiveness. A 55-gallon tank is used for large or multiple fish. Ammonia levels should be monitored with a SeaChem Ammonia Alert Badge.
I walk you through the part selection below in my video. I bookmarked it to the section where I go through each piece of equipment.
The main concern with a hospital tank is not having a bacteria culture to jumpstart it. If you have media in your display tank, move it over to the hospital tank to seed the tank. I would also recommend using Bio-Spera. This is my preferred choice for bacteria in a bottle for hospital tanks because you can find it everywhere – even in chain pet stores.
4. Perform Short-Term Relief Procedures
Because most of you will need to use copper to treat Marine Velvet disease, you will need to perform short-term relief procedures to give your fish relief from the disease. To do so, we will want to use an Acriflavine or Formalin bath. Since Formalin is a controversial medication and even banned in some states, Acriflavine is going to be our best choice.
There is actually one product in our hobby that contains both Acrifalvine and Formalin, That product would be Ruby Reef Rally. This is the preferred solution for providing relief to our fish. Here are the steps:
Prepare a 2.5 gallon or 5 gallon bucket depending on your fish size with a heater and air pump
Put your display tank water into the bucket
Add the recommended dosage of Ruby Reef Rally to the bucket and mix fully
Place fish into the bucket and allow 90 minutes to observe for signs of stress
Remove fish and place it into your hospital tank – start the next relief procedures
Ruby Reef Rally is my go to for dips. I use it for disease relief and also before I introduce any fish into my quarantine tanks. It is available at most local fish stores.
If you are unable to procure Rally, you can do a 5-minute freshwater dip. Walking through a freshwater dip can be a separate article in itself. Here is a video from Meredith Presley to get you going. She does this for gill flukes, but a freshwater dip is an effective short-term option for Marine Velvet disease.
5. Perform Treatment Procedures
It’s time to attack this disease full-on. Since there are two ways to tackle this beast, I’ll walk you through both.
Treating With Chloroquine Phosphate
If you are fortunate to get this wonder drug, here is how you eradicate Velvet with it:
The typical dosage is 40mg per gallon
Use a digital scale when measuring your dosage
Use your hospital tank water in a cup to pre-dissolve the solution
For Velvet – you will need to maintain 40 mg per gallon for a minimum 14 days to treat – 30 days is preferred
If a water change is done, you must replace the water with medicated water using the same 40mg per gallon dosage
To top off water, you will not need to add medication
I provided my video again, this time at the 7:00 mark where I walk you through how I mix CP in my quarantine tanks. You can see how I use the digital scale to measure, how I pre-dissolve, and how I add it to the aquarium.
Treating With Copper
Copper is a bit tricky because we have to work with the ramp up time. Most fish cannot tolerate an instant ramp up to therapeutic ranges. This is why we need to perform those short term procedures I explained previously to buy us time. We will need to perform a 24-hour ramp up. Here are the steps to getting us to effective levels:
Start off by raising copper levels to 1.0 ppm – verify with your Hanna Checker
Over the next 24 hours – raise your levels to 1.5 ppm. Do this every 8 hours, raising 0.125 PPM each time
After you raise it to 1.5 ppm – bring it to 2.0 ppm over the next 24 hours. Do this every 8 hours, raising 0.125 PPM each time
Treat for 30 days keeping levels above 1.50 ppm. If you drop below 1.50 at any time, your countdown to 30 days starts over!
The Fallow Period – How to Eradicate The Disease In Your Display Tank
Treating the disease in the hospital tank and saving your fish is the first battle we fight. Completely eradicating Velvet from your display is how to get a total victory. To do this, we must understand the fallow period needed to wipe it out. I also need to explain what fallow means.
Fallow means no fish in your display. Velvet needs the fish as a host, without the fish, the disease starves out and can’t reproduce. Any coral inverts, and clean-up crew you have in your display can stay in your tank. This can be really discouraging for a reefer to have a fishless tank. There have been times that I have recommended to a hobbyist to impulse buy corals when at the beginning of the fallow period. Just buy a bunch now.
Why would I say that? Because after you place all those corals you always wanted, you can begin your fallow period. It’s something you can look forward to. When your fish return they will be treated to new corals and structures to explore in a disease-free tank! The fallow period is also a long time.
How long is it? The fallow period needed to completely wipe out Velvet from a display tank is 76 days. Yes, I know that is a long time. Now you see why I’m suggesting you go buy those corals you always wanted now where there is no risk to spread disease to your fish!
During this time, you must make sure you do not cross-contaminate your tanks. Keep your hospital tank 10 feet away from your display tank and use separate nets, buckets, and equipment. Make sure you wash your hands before switching tanks with a reef-safe cleaner like dawn dish soap.
Frequently Asked Questions
I’m going to add some FAQS here that I get from readers and also to help with visibility online so people can find this post. If you have any questions, I encourage you to leave a comment below. I will add to this FAQ over time.
Can Fish Survive This?
Yes, fish can survive Marine Velvet disease. They will need treatment to survive, however. Surviving fish have been known to develop an immunity to the disease, but can still be carriers. This is why we must treat the disease and completely eradicate it from your display tank.
How Do You Get Rid Of It?
There are two medications that are effective in getting rid of Marine Velvet disease. The most available is chelated copper using a product like Copper Power. The other medication is chloroquine phosphate, which is more effective but difficult to obtain. Both need to be treated in a hospital tank, and a fallow period must be done in the display tank to remove it completely.
How Do You Treat It?
You need to treat Velvet with either chelated copper or chloroquine phosphate in a hospital tank, then have a 76-day fallow period in your display tank to completely remove it from the system.
How Long Can They Live Without A Host?
Marine Velvet can live without a host fish for up to 72 days per a Texas A&M study. This is why I recommend a 76-day fallow period. This builds a buffer so you can ensure complete eradication
How Long Can A Fish Live With This?
It depends on the fish, but generally most fish cannot live with Velvet longer than 1-2 days. Some will die before they have any visible symptoms! This is why it’s critical for you to begin treatment as soon as possible. It is not a disease to take lightly!
The most resistant fish in our hobby are those with a thick slime coat. These would be fish like clownfish, mandarins, wrasses, and rabbitfish. Nevertheless, Velvet is capable of wiping out every fish in your aquarium!
I hope this guide got you all the information you need to combat this tank killer. Marine Velvet disease shouldn’t be taken lightly. You should run to your local fish store to get supplies now if you are dealing with it. If you are not dealing with it, work on building up your medicine cabinet now. It may save your fish’s life one day or save a fellow reefer’s fish. If you have any questions, please leave a comment below. I’ve successfully fought off Velvet in the past and I am happy to share my experience with you.
📘 Want to learn more? This article is part of our complete Saltwater Fish & Reef Guide — your ultimate resource for marine fish, coral care, reef setup, and more.
Koi keeping is a hobby I have a deep appreciation for — the depth of variety in these fish is genuinely remarkable. When I attend shows like Reefapalooza, the pond side of the hobby always draws a crowd, and for good reason. The patterns, the color combinations, the sheer size these fish can reach — it’s a completely different experience from keeping tropical fish, and understanding the varieties is the first step to picking the right koi for your pond.
Koi keeping is a hobby within a hobby, and once you go down that rabbit hole it can get seriously deep. I’ve seen vendors at Aquashella selling single fish for thousands of dollars — and the buyers know exactly what they’re looking at. The variety of koi is genuinely staggering, from the classic Kohaku with its white body and red pattern to the metallic Ogon to the butterfly koi that divide opinion in the hobby. What most beginners don’t realize is how different show-quality Japanese koi are from the inexpensive pond-store fish — the bloodlines and growing conditions matter enormously. Here are 11 of the most popular varieties worth knowing, whether you’re starting a pond or shopping more seriously.
Top 11 different types of Koi fish Varieties
There are over a hundred Koi varieties. However, I’m listing down 11 of the most popular varieties of Koi fish that have taken the fishing world by storm. Below is a quick infographic. You can see the full site graphic here.
1. Gosanke
When I speak of Koi fish, my mind automatically shifts and pulls me in the direction of Gosanke.
And I’ll tell you why.
In the world of Koi, nothing beats Gosanke since this Koi variety is granted the highest status among all the varieties. The family of Gosanke Koi includes three popular Koi varieties and that’s the reason we call Gosanke the “big three”.
Gosanke Koi is a diverse group of the world’s best koi fish including, Kohaku Koi, Taisho Sanshoku or Taisho Sanke, and Showa Sanshoku, all of which are Grand champion winners. The signature colors of Gosanke Koi are red (Hi), black (Sumi), and solid white (Shiroji), where red and white are common among the three varieties.
Let’s dissect the characteristics of the three varieties of Gosanke koi fish (Kohaku, Sanke, Showa).
2. Kohaku
If you’re an avid Koi keeper, you know that Koi keeping begins and ends with Kohaku.
Kohaku, which was once known as Sarasa appeared 200 years ago. Its distinctive characteristic was the red color that made it pop out in the pool of fishes.
Now any Koi variety that is graced with red color is judged on the basis of the Kohaku pattern, which is loved by Koi enthusiasts all around the world.
Kohaku Appearance
Note: There’s no Sumi in Kohaku Koi
The contemporary Kohaku Koi fish has a solid white (shiroji) body covered with red (hi or beni) markings. However, when the Koi fish is young, the base color (shiroji) may appear translucent or pinkish. The translucency of Shiroji in young Koi fish is considered ideal as the high-quality Shiroji (white) develops with the time that can be seen in Koi competitions. For Koi hobbyists, the white base color holds more importance than the patterned red (hi) because a stunning base color makes the red patterns stand out in the crowd.
As far as the patterns are concerned, the only color is red (hi or beni). However, beni can further be classified into two hues under some circumstances. The most popular and common color of beni is orange-red or purple-red. The color can be transformed into a deep scarlet by maintaining water quality and good nutritional Koi fish food with the right amount of color enhancers.
Things to look for
When choosing among a large batch of Kohakus, these are the things to look out for the perfect and healthy fit.
Choose the Koi fish with red (beni) on the head that only goes down about as far as the nostrils
The eyes of Kohaku should be clear with no red markings. However, recent research shows that red can cover one eye but never both the eyes
The base or shiroji should be milky or snowy white with no yellow coloration
The hi around tails and fins should be less
The interior of Hi should have no hues of Shiroji
The quality or depth of beni should be thick; the thicker the Beni, the better
3. Taisho Sanke
This winning breed of Koi fish is a bit confusing to many neophytes because of the three different names; Sanke, Taisho Sanke, and Taisho Sanshoku.
Whatever the name may be, they all represent Taisho Sanshoku. However, the most common name for this Koi fish breed is Sanke, and the most appropriate is Taisho Sanshoku. Sanshokumeans tricolor in Japanese, indicating three different colors of Sanke, particularly white, black, and red.
Simply put, Sanke Koi is a solid white (shiroji) Koi fish with red (hi, beni) and black (Sumi) markings.
Taisho Sanke appearance
To find a Taisho Sanke that is both healthy and happy, you need to choose a healthy Kohaku. The Kohaku Koi sets the standard for a wholesome Sanke. The clearer the white (shiroji), the healthier the Sanke Koi.
The base color of Sanke Koi fish is shiroji (solid, creamy white), which begins at the nose and extends to the tail and fins. The Hi on Sanke is a deep-orange shade rather than Cardinal red. Sanke possesses large, reddish-orange spots that make their color pattern appealing with shiroji between the patches of Hi.
Whereas, the Sumi tends to be the rarest color on Sanke Koi. The Sumi (black) on Sanke are comparatively smaller than the Hi or Beni, making it a secondary color, while Beni or Shiroji are primary.
Things to look for
Shiroji should be clean, bright, and not discolored
Sumi should appear as round patches and should be only present above the lateral line
The head should have no Sumi
On Sanke, the red should take up to 70% of Koi, the black about 10%, and the rest should be Shiroji
Avoid Sanke with lots of small, peppery like Sumi markings. It’s a sign of poor quality Koi fish
The fins should be all-white or partial white with black stripes
4. Showa Sanshoku
Novice Koi keepers often confuse Showa Sanshoku with Sanke because of the uncanny resemblance between the two types of Koi.
Showa Sanshoku is a tri-colored Koi variety with Sumi as the dominant color. In short, Showa is a black Koi adorned with white (Shiroji) and red (Hi) patterns.
Appearance
Appearance-wise, Showa can be confused with Sanke because of the same colors. However, Sanke is graced with a white base that does not go beyond the lateral line or onto the head. Alternatively, Showa possesses a black skin that shows through Shiroji and Hi.
Also, one biggest difference between sanke-showa is the patterns of Showa wrap around.
The Showa is further classified into seven different types of koi according to their body markings.
Hi Showa with dominant red and black and very little Shiroji (white).
Kindai Showa with 40% white or more, and varying amounts of Hi and Sumi.
Old style Showa is mostly black with scarce Shiroji and Hi as a secondary color.
Doitsu Showa has a shortage of scales except for some broad scales.
Kin Showa has a gold, metallic sheen that sparkles.
Gin Rin Showa has a silver metallic sheen. However, there are some Koi varieties with a combination of gold and silver sheen. The class of Koi is known as Kin Gin Rin.
Ai Showa has blue or deep indigo speckles over the body.
What to look for
Thick base color with a lustrous appearance
Sumi extends along the body length and extends into the fins moderately
Red in Showa is strong and dense, particularly on the face, back, and tail region
The pattern should be evenly distributed and easy on the eyes with sharp edges between the patterns
5. Utsurimono
Utsurimono belongs to the same family as Showa Sanshoku. They are graced with a black coat and divided into further categories according to the color of their body markings.
Utsurimono possesses a non-metallic black color mixed with any secondary color, producing beautiful interlacing patterns.
Fun fact: Utsurimono was once considered a defective Showa Koi that lacked Hi (red) coloring. However, over the years, Koi enthusiasts have started to admire and adore this majestic Koi breed.
Appearance
Like other varieties of Koi, Utsurimono is defined by its distinctive color patterns that leave the fish lovers in awe.
Appearance-wise, Utsurimono falls under three primary varieties.
Ki Utsuri have a black coat with yellow as an accent color
Hi Utsuri, as the name suggests, Hi utsuri has a black coat accentuated with a scarlet color.
Shiro Utsuri has black skin with crystal white as the accent color. Also, the base of the pectoral fins of Shiro Utsuri is black.
What to look for
The Sumi of Utsurimono should cover the nose, pectoral fin joints, and side faces
Always look out for four common patterns on the head of Utsurimono, which are the lightning strike, the small black patches, the two distinctly different black patches, and the heavy black pattern. These patterns are then separated by the accent color of the variety
The accent color should be properly distributed as if the black base is wrapped around the accent colors
6. Hikarimono
Koi fish are known for their bizarre colors but not all Koi fish show various colors at once. There’s a variety of Koi that shows only one color which is known as Hikarmono or Ogon Koi.
The Ogon Koi can be of any color ranging from yellow, red, orange, platinum ogon, and cream. All these Koi colors can either be regular or metallic. However, the most common colors that the Ogon Koi comes in are white and yellow.
To be sure if you have a pure breed Hikarimono, identify its colors. If there’s more than one color, it’s not a pure breed of Ogon Koi. Suppose you have a platinum ogon, it should only possess one color i.e., platinum. If the color of your Platinum Ogon is not uniform, then it’s not purebred.
Hikarimono is a hardy Koi fish with a greater lifespan than other varieties. Hence, it’s low-maintenance and easy to breed.
Hikarimono Koi can be classified into 3 sub-categories.
Hikari-Moyo is a metallic breed with patterns
Hikari-Utsuri is a metallic variant of Utsurimono
Hikari- Muji is a metallic version of Mujimono
7. Kawarimono
The meaning of Kawarimono in Japanese means “Oddballs” and so Kawarimono is a classification of a variety of Koi that are non-metallic and don’t fit into other classes.
The Koi breeds that fall under the single-colored category are called Benigoi, where the Hi (red) covers almost the entire body that looks like a giant goldfish.
The Single-colored Koi breed features a uniform color tone with red or white-tipped fins and a voluminous body shape.
Black
Koi varieties with black color display deep and even Sumi on fins or body. The four main varieties of Koi are.
a. Karasu has black fins and a body with an orange or white tummy
b. Hajiro has a black coat with a white nose and white-tipped fins
c. Hageshiro has a white head to the color combination
d. Youtsujiro has white fins
Other Types
Other odd Koi varieties are Midorigoi (green-colored) and Matsuba Koi (red Koi with dark scales).
8. Gin rin
In a Koi fish pond, all that glitters is Gin rin.
Gin Rin or Kin Gin Rin is more like a scale-type reference, which means silver scales. Therefore, Gin Rin have glittery scales that resemble floating diamond in water ponds.
The color of the Gin Rin scales highly depends on the base color of Koi fish. For example, the Gin Rin reflects golden color when they cover red base (Hi) and silver while covering black or white skin.
Gin Rin Koi is different from Hikarimono and metallic variety of Koi because Gin Rin are metallic scales whereas, the Hikarimono and metallic variety display a shiny, lustrous coat.
There are four types of Gin Rin Koi.
Diamond Gin Rin is the most common type with a crackled glass-like appearance
Beta Gin is less common and the surface of skin sparkles like that of a mirror
Pearl Gin is the most unusual type of Gin Rin with raised shiny deposits on the center of scales
Kado Gin Rin is the least preferred type of Koi
9. Doitsu
Doitsu Koi are a modern addition to the Koi family. It is a crossbreed of Wagoi and European Caprinus Carpio Carpio with little to no scales.
However, in terms of scales, the Doitsu Koi can be divided into two types of Koi.
The leather carp with little or no scales on the body
The mirror carp with a row of enlarged scales on the lateral line and two lines running alongside the dorsal fin
Furthermore, the types of scales in Doitsu Koi fish can be divided into three types.
Kawi Goi
Kagami Goi
Yoroi Goi
Pto Tip: In competitions, the Doitsu Koi is usually beat out in shows by the scaled Koi varieties.
10. Butterfly
The butterfly Koi is one of the most popular and beautiful varieties of Koi. It’s a shame that it’s considered a fake breed of Koi fish by the Japanese, which is the reason it’s more famous in the USA than in other parts of the world.
The butterfly Koi is the descendant of Goldfish and inherits one of the fanciest traits of its parent. i.e., long and flowing fins.
However, despite being one of the most graceful ornamental fish, it is not suitable for conditions because it deviates from the traditional Koi characteristics.
11. Tancho
Tancho is a red-head Koi variety that wears its Hi (red) marking as a crown on the head.
Tancho Koi possess Hi markings on the head region only and comprise the family of Kohaku with lone, circular patterns of Hi on the head without Hi markings on the white, solid body.
The red spot on the head should be circular and crimson red in color for the ideal Tancho Koi, such as Tancho, Tancho Showa, and Tancho Sanke.
Most Popular Types For Shows
Though any Koi fish is truly capable of winning competitions, there are certain groups of Koi fish that are more prevalent for shows than others. They include.
Kohaku
Sanke
Showa
Particularly the Gosanke variety of Koi is the most popular for Koi shows. However, the other classes are that are also in vogue for competitions are Utsuri, Bekko, Shusui, Koromo, Hikari Muji, Hikari Mono, Hikari Utsuri, Kawarigoi, Tancho, Kin Gin Rin. While some shows might also entertain the Doitsu Koi.
FAQS
How many types are there?
There are over more than a hundred (100) varieties of Koi fish known to mankind to date. Each variance has its own distinctive features that set them apart from others. The most prominent features of Koi lie in the color, patterns, and body conformation.
What are the three varieties?
The three varieties of Koi or the “big three” refer to Gosanke, chiefly Kohaku, Taisho Sanshoku (Sanke), and Showa Sanshoku (Showa). These three types of koi out of 100 varieties are highest-rated for their excellence, popularity, and quality.
What color is most expensive?
Kohaku Koi, the red and white carp is the most expensive Koi species in the world it was sold for around $2.2 million US dollars in China.
What is the rarest?
The rarest Koi fish till date is Ki Utsuri. The group of Utsurimono with yellow patterns over a black, lacquer body.
What is the biggest type?
Koi can be humongous. However, some Koi grow out to be bigger than the expectations. The same happened in 2007 when the Koi named “Big girl” was in the limelight as the world’s biggest Koi fish. Big Girl weighed around 90lbs and was 1.2m long.
No other Koi has beaten the the record of monstrous ‘Big Girl‘ so far.
What are the best to buy?
Choosing the best Koi for your garden ponds might be a nuisance. Because you never know the water quality and nutritional health of your fish before you spend some time with it.
I don’t recommend buying fish online, no matter how trustworthy the site seems. That’s because you can only check out for abnormalities and problems in person. Therefore, I recommend going to the store and analyzing the water conditions and nutritional needs of the fish before making a purchase.
I’m an avid Koi keeper, and all my life, I’ve bought my Koi from Next Day Koi. They have an extensive collection of Koi breeds that are bred for perfection and excellence at reasonable rates. Also, the freedom to pick your own delivery date while ordering is what makes Next Day Koi the best bet for an occupied person like me. You can use my promo code ASDEPOT for an extra 10% off!
Do they grow faster than goldfish?
Koi are hardy animals that are voracious eaters. Also, they live much longer than goldfish and have a healthier immunity system. As compared to Goldfish, Koi grow at a rapid rate, doubling the Goldfish in their first year.
How Can You Tell a Male from a Female?
Here are some pointers to look for when identifying a female or male Koi in the swarm of fish. Koi males have more slender bodies than females. A female Koi has a rounded body, especially when she’s carrying eggs.
The pectoral fins of male Koi are pointed and solid in color. The female possesses rounder fins as compared to its male counterparts.
The breeding season brings many changes to Koi fish. Therefore, look out for Tubercles (little, white growths on the male head and pectoral fins). Comparatively, female Koi fish don’t develop Tubercles.
Closing Thoughts
The Nishikigoi family has over a hundred different types of Koi, capable of animating your garden ponds through their rich, vibrant colors and unique body conformation. We identify the Koi varieties on the basis of their markings, pattern placement, accent colors, and history. This article speaks about nine different Koi varieties, out of which three are prized Koi, ideal for Japanese Koi competitions.
Koi keeping is a hobby within a hobby, and once you go down that rabbit hole it can get seriously deep. I’ve seen vendors at Aquashella selling single fish for thousands of dollars — and the buyers know exactly what they’re looking at. The variety of koi is genuinely staggering, from the classic Kohaku with its white body and red pattern to the metallic Ogon to the butterfly koi that divide opinion in the hobby. What most beginners don’t realize is how different show-quality Japanese koi are from the inexpensive pond-store fish — the bloodlines and growing conditions matter enormously. Here are 11 of the most popular varieties worth knowing, whether you’re starting a pond or shopping more seriously.
Top 11 different types of Koi fish Varieties
There are over a hundred Koi varieties. However, I’m listing down 11 of the most popular varieties of Koi fish that have taken the fishing world by storm. Below is a quick infographic. You can see the full site graphic here.
1. Gosanke
When I speak of Koi fish, my mind automatically shifts and pulls me in the direction of Gosanke.
And I’ll tell you why.
In the world of Koi, nothing beats Gosanke since this Koi variety is granted the highest status among all the varieties. The family of Gosanke Koi includes three popular Koi varieties and that’s the reason we call Gosanke the “big three”.
Gosanke Koi is a diverse group of the world’s best koi fish including, Kohaku Koi, Taisho Sanshoku or Taisho Sanke, and Showa Sanshoku, all of which are Grand champion winners. The signature colors of Gosanke Koi are red (Hi), black (Sumi), and solid white (Shiroji), where red and white are common among the three varieties.
Let’s dissect the characteristics of the three varieties of Gosanke koi fish (Kohaku, Sanke, Showa).
2. Kohaku
If you’re an avid Koi keeper, you know that Koi keeping begins and ends with Kohaku.
Kohaku, which was once known as Sarasa appeared 200 years ago. Its distinctive characteristic was the red color that made it pop out in the pool of fishes.
Now any Koi variety that is graced with red color is judged on the basis of the Kohaku pattern, which is loved by Koi enthusiasts all around the world.
Kohaku Appearance
Note: There’s no Sumi in Kohaku Koi
The contemporary Kohaku Koi fish has a solid white (shiroji) body covered with red (hi or beni) markings. However, when the Koi fish is young, the base color (shiroji) may appear translucent or pinkish. The translucency of Shiroji in young Koi fish is considered ideal as the high-quality Shiroji (white) develops with the time that can be seen in Koi competitions. For Koi hobbyists, the white base color holds more importance than the patterned red (hi) because a stunning base color makes the red patterns stand out in the crowd.
As far as the patterns are concerned, the only color is red (hi or beni). However, beni can further be classified into two hues under some circumstances. The most popular and common color of beni is orange-red or purple-red. The color can be transformed into a deep scarlet by maintaining water quality and good nutritional Koi fish food with the right amount of color enhancers.
Things to look for
When choosing among a large batch of Kohakus, these are the things to look out for the perfect and healthy fit.
Choose the Koi fish with red (beni) on the head that only goes down about as far as the nostrils
The eyes of Kohaku should be clear with no red markings. However, recent research shows that red can cover one eye but never both the eyes
The base or shiroji should be milky or snowy white with no yellow coloration
The hi around tails and fins should be less
The interior of Hi should have no hues of Shiroji
The quality or depth of beni should be thick; the thicker the Beni, the better
3. Taisho Sanke
This winning breed of Koi fish is a bit confusing to many neophytes because of the three different names; Sanke, Taisho Sanke, and Taisho Sanshoku.
Whatever the name may be, they all represent Taisho Sanshoku. However, the most common name for this Koi fish breed is Sanke, and the most appropriate is Taisho Sanshoku. Sanshokumeans tricolor in Japanese, indicating three different colors of Sanke, particularly white, black, and red.
Simply put, Sanke Koi is a solid white (shiroji) Koi fish with red (hi, beni) and black (Sumi) markings.
Taisho Sanke appearance
To find a Taisho Sanke that is both healthy and happy, you need to choose a healthy Kohaku. The Kohaku Koi sets the standard for a wholesome Sanke. The clearer the white (shiroji), the healthier the Sanke Koi.
The base color of Sanke Koi fish is shiroji (solid, creamy white), which begins at the nose and extends to the tail and fins. The Hi on Sanke is a deep-orange shade rather than Cardinal red. Sanke possesses large, reddish-orange spots that make their color pattern appealing with shiroji between the patches of Hi.
Whereas, the Sumi tends to be the rarest color on Sanke Koi. The Sumi (black) on Sanke are comparatively smaller than the Hi or Beni, making it a secondary color, while Beni or Shiroji are primary.
Things to look for
Shiroji should be clean, bright, and not discolored
Sumi should appear as round patches and should be only present above the lateral line
The head should have no Sumi
On Sanke, the red should take up to 70% of Koi, the black about 10%, and the rest should be Shiroji
Avoid Sanke with lots of small, peppery like Sumi markings. It’s a sign of poor quality Koi fish
The fins should be all-white or partial white with black stripes
4. Showa Sanshoku
Novice Koi keepers often confuse Showa Sanshoku with Sanke because of the uncanny resemblance between the two types of Koi.
Showa Sanshoku is a tri-colored Koi variety with Sumi as the dominant color. In short, Showa is a black Koi adorned with white (Shiroji) and red (Hi) patterns.
Appearance
Appearance-wise, Showa can be confused with Sanke because of the same colors. However, Sanke is graced with a white base that does not go beyond the lateral line or onto the head. Alternatively, Showa possesses a black skin that shows through Shiroji and Hi.
Also, one biggest difference between sanke-showa is the patterns of Showa wrap around.
The Showa is further classified into seven different types of koi according to their body markings.
Hi Showa with dominant red and black and very little Shiroji (white).
Kindai Showa with 40% white or more, and varying amounts of Hi and Sumi.
Old style Showa is mostly black with scarce Shiroji and Hi as a secondary color.
Doitsu Showa has a shortage of scales except for some broad scales.
Kin Showa has a gold, metallic sheen that sparkles.
Gin Rin Showa has a silver metallic sheen. However, there are some Koi varieties with a combination of gold and silver sheen. The class of Koi is known as Kin Gin Rin.
Ai Showa has blue or deep indigo speckles over the body.
What to look for
Thick base color with a lustrous appearance
Sumi extends along the body length and extends into the fins moderately
Red in Showa is strong and dense, particularly on the face, back, and tail region
The pattern should be evenly distributed and easy on the eyes with sharp edges between the patterns
5. Utsurimono
Utsurimono belongs to the same family as Showa Sanshoku. They are graced with a black coat and divided into further categories according to the color of their body markings.
Utsurimono possesses a non-metallic black color mixed with any secondary color, producing beautiful interlacing patterns.
Fun fact: Utsurimono was once considered a defective Showa Koi that lacked Hi (red) coloring. However, over the years, Koi enthusiasts have started to admire and adore this majestic Koi breed.
Appearance
Like other varieties of Koi, Utsurimono is defined by its distinctive color patterns that leave the fish lovers in awe.
Appearance-wise, Utsurimono falls under three primary varieties.
Ki Utsuri have a black coat with yellow as an accent color
Hi Utsuri, as the name suggests, Hi utsuri has a black coat accentuated with a scarlet color.
Shiro Utsuri has black skin with crystal white as the accent color. Also, the base of the pectoral fins of Shiro Utsuri is black.
What to look for
The Sumi of Utsurimono should cover the nose, pectoral fin joints, and side faces
Always look out for four common patterns on the head of Utsurimono, which are the lightning strike, the small black patches, the two distinctly different black patches, and the heavy black pattern. These patterns are then separated by the accent color of the variety
The accent color should be properly distributed as if the black base is wrapped around the accent colors
6. Hikarimono
Koi fish are known for their bizarre colors but not all Koi fish show various colors at once. There’s a variety of Koi that shows only one color which is known as Hikarmono or Ogon Koi.
The Ogon Koi can be of any color ranging from yellow, red, orange, platinum ogon, and cream. All these Koi colors can either be regular or metallic. However, the most common colors that the Ogon Koi comes in are white and yellow.
To be sure if you have a pure breed Hikarimono, identify its colors. If there’s more than one color, it’s not a pure breed of Ogon Koi. Suppose you have a platinum ogon, it should only possess one color i.e., platinum. If the color of your Platinum Ogon is not uniform, then it’s not purebred.
Hikarimono is a hardy Koi fish with a greater lifespan than other varieties. Hence, it’s low-maintenance and easy to breed.
Hikarimono Koi can be classified into 3 sub-categories.
Hikari-Moyo is a metallic breed with patterns
Hikari-Utsuri is a metallic variant of Utsurimono
Hikari- Muji is a metallic version of Mujimono
7. Kawarimono
The meaning of Kawarimono in Japanese means “Oddballs” and so Kawarimono is a classification of a variety of Koi that are non-metallic and don’t fit into other classes.
The Koi breeds that fall under the single-colored category are called Benigoi, where the Hi (red) covers almost the entire body that looks like a giant goldfish.
The Single-colored Koi breed features a uniform color tone with red or white-tipped fins and a voluminous body shape.
Black
Koi varieties with black color display deep and even Sumi on fins or body. The four main varieties of Koi are.
a. Karasu has black fins and a body with an orange or white tummy
b. Hajiro has a black coat with a white nose and white-tipped fins
c. Hageshiro has a white head to the color combination
d. Youtsujiro has white fins
Other Types
Other odd Koi varieties are Midorigoi (green-colored) and Matsuba Koi (red Koi with dark scales).
8. Gin rin
In a Koi fish pond, all that glitters is Gin rin.
Gin Rin or Kin Gin Rin is more like a scale-type reference, which means silver scales. Therefore, Gin Rin have glittery scales that resemble floating diamond in water ponds.
The color of the Gin Rin scales highly depends on the base color of Koi fish. For example, the Gin Rin reflects golden color when they cover red base (Hi) and silver while covering black or white skin.
Gin Rin Koi is different from Hikarimono and metallic variety of Koi because Gin Rin are metallic scales whereas, the Hikarimono and metallic variety display a shiny, lustrous coat.
There are four types of Gin Rin Koi.
Diamond Gin Rin is the most common type with a crackled glass-like appearance
Beta Gin is less common and the surface of skin sparkles like that of a mirror
Pearl Gin is the most unusual type of Gin Rin with raised shiny deposits on the center of scales
Kado Gin Rin is the least preferred type of Koi
9. Doitsu
Doitsu Koi are a modern addition to the Koi family. It is a crossbreed of Wagoi and European Caprinus Carpio Carpio with little to no scales.
However, in terms of scales, the Doitsu Koi can be divided into two types of Koi.
The leather carp with little or no scales on the body
The mirror carp with a row of enlarged scales on the lateral line and two lines running alongside the dorsal fin
Furthermore, the types of scales in Doitsu Koi fish can be divided into three types.
Kawi Goi
Kagami Goi
Yoroi Goi
Pto Tip: In competitions, the Doitsu Koi is usually beat out in shows by the scaled Koi varieties.
10. Butterfly
The butterfly Koi is one of the most popular and beautiful varieties of Koi. It’s a shame that it’s considered a fake breed of Koi fish by the Japanese, which is the reason it’s more famous in the USA than in other parts of the world.
The butterfly Koi is the descendant of Goldfish and inherits one of the fanciest traits of its parent. i.e., long and flowing fins.
However, despite being one of the most graceful ornamental fish, it is not suitable for conditions because it deviates from the traditional Koi characteristics.
11. Tancho
Tancho is a red-head Koi variety that wears its Hi (red) marking as a crown on the head.
Tancho Koi possess Hi markings on the head region only and comprise the family of Kohaku with lone, circular patterns of Hi on the head without Hi markings on the white, solid body.
The red spot on the head should be circular and crimson red in color for the ideal Tancho Koi, such as Tancho, Tancho Showa, and Tancho Sanke.
Most Popular Types For Shows
Though any Koi fish is truly capable of winning competitions, there are certain groups of Koi fish that are more prevalent for shows than others. They include.
Kohaku
Sanke
Showa
Particularly the Gosanke variety of Koi is the most popular for Koi shows. However, the other classes are that are also in vogue for competitions are Utsuri, Bekko, Shusui, Koromo, Hikari Muji, Hikari Mono, Hikari Utsuri, Kawarigoi, Tancho, Kin Gin Rin. While some shows might also entertain the Doitsu Koi.
FAQS
How many types are there?
There are over more than a hundred (100) varieties of Koi fish known to mankind to date. Each variance has its own distinctive features that set them apart from others. The most prominent features of Koi lie in the color, patterns, and body conformation.
What are the three varieties?
The three varieties of Koi or the “big three” refer to Gosanke, chiefly Kohaku, Taisho Sanshoku (Sanke), and Showa Sanshoku (Showa). These three types of koi out of 100 varieties are highest-rated for their excellence, popularity, and quality.
What color is most expensive?
Kohaku Koi, the red and white carp is the most expensive Koi species in the world it was sold for around $2.2 million US dollars in China.
What is the rarest?
The rarest Koi fish till date is Ki Utsuri. The group of Utsurimono with yellow patterns over a black, lacquer body.
What is the biggest type?
Koi can be humongous. However, some Koi grow out to be bigger than the expectations. The same happened in 2007 when the Koi named “Big girl” was in the limelight as the world’s biggest Koi fish. Big Girl weighed around 90lbs and was 1.2m long.
No other Koi has beaten the the record of monstrous ‘Big Girl‘ so far.
What are the best to buy?
Choosing the best Koi for your garden ponds might be a nuisance. Because you never know the water quality and nutritional health of your fish before you spend some time with it.
I don’t recommend buying fish online, no matter how trustworthy the site seems. That’s because you can only check out for abnormalities and problems in person. Therefore, I recommend going to the store and analyzing the water conditions and nutritional needs of the fish before making a purchase.
I’m an avid Koi keeper, and all my life, I’ve bought my Koi from Next Day Koi. They have an extensive collection of Koi breeds that are bred for perfection and excellence at reasonable rates. Also, the freedom to pick your own delivery date while ordering is what makes Next Day Koi the best bet for an occupied person like me. You can use my promo code ASDEPOT for an extra 10% off!
Do they grow faster than goldfish?
Koi are hardy animals that are voracious eaters. Also, they live much longer than goldfish and have a healthier immunity system. As compared to Goldfish, Koi grow at a rapid rate, doubling the Goldfish in their first year.
How Can You Tell a Male from a Female?
Here are some pointers to look for when identifying a female or male Koi in the swarm of fish. Koi males have more slender bodies than females. A female Koi has a rounded body, especially when she’s carrying eggs.
The pectoral fins of male Koi are pointed and solid in color. The female possesses rounder fins as compared to its male counterparts.
The breeding season brings many changes to Koi fish. Therefore, look out for Tubercles (little, white growths on the male head and pectoral fins). Comparatively, female Koi fish don’t develop Tubercles.
Closing Thoughts
The Nishikigoi family has over a hundred different types of Koi, capable of animating your garden ponds through their rich, vibrant colors and unique body conformation. We identify the Koi varieties on the basis of their markings, pattern placement, accent colors, and history. This article speaks about nine different Koi varieties, out of which three are prized Koi, ideal for Japanese Koi competitions.
People ask me all the time whether they should get koi or goldfish for their pond — and it’s genuinely one of the most important questions to get right before you start. I’ve kept goldfish for decades and followed koi keeping closely throughout my 25+ years in the hobby. The two fish look similar enough to confuse anyone, but they have very different size requirements, lifespans, and price tags. I’ve seen beginners end up with a koi pond they weren’t ready for, and others disappointed by goldfish when they really wanted something more striking. In this guide I’m covering 7 key differences that will tell you exactly which fish suits your pond, your budget, and your long-term commitment.
Origins
It’s safe to say that Goldfish are the distant “elder” cousins of Koi fish. I’ll tell you why.
Goldfish and Koi both originated from East Asia as a result of selective breeding. However, goldfish were bred from a dull olive green colored edible fish, namely ‘Prussian Carp’.
Whereas, Koi are colorful variants of Amur carp, which emerged in the 1820s. Up until recently, it’s believed that Koi fish have been bred from Common Carp (Cyprinus carpio).Ranger Homesteading has an excellent video below that goes into greater depth about the history of koi fish.
However, goldfish are considered a species of their own, while Koi still falls under the Cyprinus carpio category.
Appearance
Koi and Goldfish look so much alike when they’re young, wild, and free. However, as they age, things start to change.
The most significant difference between Koi and goldfish lies in their body shape. Koi are all almost the same size, but goldfish are usually wider and have an egg-like appearance. However, most goldfish have a variety of body types and shapes depending on their characteristics. They have dorsal fins and tail configurations with round, bulging eyes.
On the other hand, Koi have a common body shape that remains the same regardless their type with their fins and tail connected. The most interesting trait of Koi is that they possess the same body size even with different color types that leave their owners in awe.
Appearance-wise, size is the most dominant difference between Koi and goldfish. Goldfish are smaller in size and usually grow to around 6 inches long. However, in some rare cases, they might grow to be around one foot long.
Koi, comparatively grow out to be much bigger with an average size of around 20 inches to 25 inches. In some rare cases, Koi are found to be 4 feet long, if given enough food and space.
Koi BarbelGoldfish – No Barbel
Personally, when I was new to fish keeping, I started distinguishing between goldfish and Koi based on their barbels. Barbels are whiskers at the side of the mouth. If the barbels are present, you’ve got Koi. If not, then goldfish.
Colors
When it comes to colors, the difference between Koi fish and goldfish are more apparent. That’s because Koi shows a more diverse and striking range of colors than goldfish. This may be because Koi fish are the descents of Common carp, and therefore, show colors in the metallic coloration along with red, orange, yellow, black, and white. The patterns are more unique to Koi due to their selective breeding.
Contrastingly, goldfish come in red, orange, grey, brown, yellow, white, and black with the exception of gold coloration.
Fins
One significant difference between Koi and goldfish lies in the fins and tails.
Koi FinsGoldfish Fins
Goldfish are graced with two sets of paired fins (pectoral and pelvic) and three sets of single fins (dorsal, caudal, anal). Whereas, the fins of Koi are as simple as a fish’s fin can get.
There’s an exception in Koi varieties with long, flowy fins, namely Butterfly Koi. And even though, many pond owners love the flowy look of butterfly Koi, Koi enthusiasts do not consider them to be true Koi.
In addition to that, the distribution of fins in goldfish is highly dependent on the tails. Common goldfish might be single-tailed or double-tailed where the single varieties have a single caudal and anal fin and double varieties, such as the fancy goldfish possess two caudal and anal fins. Some goldfish, like the Shubunkin tend to have the fanciest scales and colors that Koi have.
Lifespan
Do you know?
The oldest known Koi in Japan lived for about good 226 years, whereas, the oldest known goldfish lived for about 43 years. Hence, this record speaks volumes about their overall lifespan.
Koi fish live much longer than goldfish. It is due to the dramatic changes in the body shape of goldfish that lessens their life expectancy.
The fun part is, both, Koi and goldfish reach their maturity by the age of two or three. However, their lifespan differs from each other. Koi fish are believed to live for about 25 to 35 years or over, while the life expectancy of goldfish is around 5 to 10 years depending on the pond conditions and nutritional analysis.
Food
Concerning the matters of food, Koi fish and goldfish are so much similar. They both are omnivorous, lack a traditional stomach, i.e., food passes into the mouth and then straight to the intestine.
However, due to the variety in body shape and sizes of Koi. Koi Food is tailored for each size – from pellets to food sticks. Also, Koi fish are voracious eaters and might end up eating other small fish in the pond.
Compared to Koi, goldfish have smaller mouths and pharyngeal teeth to crunch the food into smaller pieces. Like Koi, they are omnivorous and enjoy flakes and small pelleted food.
Aquarium Life
One of the most frequently asked questions about Koi and goldfish is about their aquarium life.
I’ve talked about this before; Koi don’t do well in aquariums. They are born to thrive in garden ponds with at least 200 gallons of water per fish, a capacity of 1000 gallons, and in a pond at least 2 feet in depth.
Therefore, Koi demands a proper pond with optimal water level and quality. For raising healthy and happy Koi, they should be kept in Ponds, provided that the oxygen levels, diet, and water quality are top-notch.
On the other hand, goldfish are happy and healthy in aquariums, especially the fancy varieties, which are slower and incompetent than the common goldfish. Furthermore, if you decide to keep your goldfish in indoor aquariums, it’s recommended that you provide them with enough space to move around freely and grow healthily.
Compatibility with Plants
If you fancy submerged plants in your garden ponds, this news might disappoint you. Koi do not get along with most aquatic plants. As I mentioned before, Koi are avid eaters with bigger mouths and they ingest small aquatic plants, leaving little to no vegetation behind.
Goldfish, as opposed to Koi, are fast friends with aquatic plants and will swim around lotus and Lillies merrily, without causing any damage.
You can keep plants with Koi, but you need to be more selective with the varieties you choose versus with Goldfish.
Diseases
Koi are a very hardy breed of fish compared to goldfish, which makes them a perfect fit for extreme weather. However, under circumstances, Koi develop some conditions that might cease their growth and overall performance. Some common Koi diseases are Aeromonas, carp pox, Dropsy, costia, columnaris, and anchor worms.
These diseases are either caused by bacteria, viruses, or some parasites, and the best treatment for Koi diseases is isolation. However, the problem is, Koi is a powerful and large breed of fish. It might be a nuisance to capture them single-handedly. It’s recommended that you use a net with long handles to reach your Koi without causing much trouble.
On the other hand, goldfish may be low-maintenance and easy to care for, but they are more sensitive and demand specialized care. This is especially true if you prefer fancy goldfish.
Some of the most common Goldfish diseases are ich, flukes, fish lice, velvet, fin rot, etc., The treatment of goldfish is much easier than Koi because of the water volume. Also, goldfish are smaller in size and can be removed with a regular-sized net.
FAQs
I’ve compiled a list of the most frequently asked questions concerning Koi vs Goldfish. Please don’t hesitate to comment if you have more to add.
Can they survive in the same pond?
Frankly, yes, under some circumstances.
As I discussed earlier, Koi are much larger in size than goldfish. Therefore, you would need ample space to fill your ponds with Koi and goldfish, both. Furthermore, goldfish enjoy the company of aquatic plants while Koi will enjoy to eating most of them. Hence, there should be a partition for aquatic plants to keep the two breeds catered to and happy.
The last point is the treatment of diseases. Koi body has different requirements, and since they are graced with larger bodies than goldfish, it might be tough to catch and isolate them. Therefore, you need better nets with a solid strategy to deal with such unfortunate situations.
In addition to these points, despite being hardy and low-maintenance, Koi and goldfish demand proper attention and extensive care. Consequently, you will have to invest more time and knowledge in keeping the two together.
Other than that, Koi and goldfish get along pretty well and enjoy each other’s company. In fact, many expert Koi enthusiasts love keeping their Koi and goldfish together for ornamental purposes.
Will koi fish kill goldfish?
In my years of experience, I’ve never experienced this scenario personally. However, I believe accidents may occur only if you keep the two fish of different sizes together. Koi are greedy and voracious, and they might end up killing fish smaller than them, including goldfish. Therefore, while keeping the two together, be wary of their body size.
Are koi fish aggressive to Goldfish?
No, Koi are not aggressive to goldfish. However, there are a few exceptions, such as fancy varieties of goldfish that are unhurried, clumsy, and slow, which might not get along with Koi due to their competence for food and speedy nature. As a rule of thumb, avoid keeping Koi with any small and slow specie
Koi vs Goldfish – Which Fish Is Right for My Pond? (Main Differences)
Koi and goldfish, both are a mystical addition to your garden ponds. However, there comes a time when you have to choose between the two.
So the answer to which is right for your pond lies in your preferences, available space, and time investment.
Koi offers a rich variety of colors and different sizes to your pond. Yet, they need ample space to thrive and grow happily. You should only consider keeping Koi if you can at least manage 200 gallons of water per fish and have a pond of over 1000 gallons. The fish themselves are also more expensive than goldfish. Since they require large ponds, pond maintenance would require a proper routine with bigger and more expensive equipment to maintain water quality.
Whereas, Goldfish are much smaller in size and require at least 20 gallons of water. Furthermore, goldfish can thrive in small tanks or aquariums provided that the water quality is excellent. However, due to the varying body shape and configuration, they are slightly more difficult to take care of than Koi.
All in all, if you have a pond that is less than 1000 gallons, you should go for goldfish.
Alternatively, if you want a breed hardier than goldfish and you can invest time and money in building a larger pond, Koi would be your best bet.
Koi vs Goldfish Differences – Which Is The Best Fish For Garden Ponds?
Apart from body sizes and pond requirements, a few things should be taken into consideration while choosing between the two fish breeds.
The longevity or life expectancy of Koi is much greater than that of goldfish. Hence, if you’re looking for a long-term investment for your garden ponds, you should definitely opt for Koi.
Also, if you’re someone who admires a pet’s personality, Koi would be compatible with you. Scientists believe that Koi are more social, smarter, and have more developed personalities than goldfish. And that’s why most fish connoisseurs prefer Koi over goldfish because what’s more rewarding than keeping your fish as companions throughout your life and establishing a healthy relationship with them?
Nonetheless, both fish make excellent pets that add value, life, and intense colors to your garden ponds.
Closing Thoughts
As I promised, after reading this article, you’ll no longer feel the need to ask, Koi vs. Goldfish: which is which?
Be informed that the major difference between Koi and goldfish lies in the size, lifespan, colors and patterns, appearances, and most importantly, the presence of barbels. Other than that, both are prized pets, loved and adored by pond keepers.
📘 Want to learn more? This article is part of our complete Freshwater Fish Guide — your ultimate resource for freshwater species, care tips, tank setup, and more.
