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Koi vs Goldfish


Have you ever been to fishing exhibitions? If you have, chances are that you have had a hard time distinguishing between Koi and Goldfish amid fish galore.

And that’s not just you! Anyone can confuse the two breeds because of their uncanny resemblance. Even though Koi and goldfish look so much alike, they are actually two completely different varieties with distinctive characteristics.

In this article, I’ll put my years of experience to use and show you some of the obvious differences between Koi fish and goldfish that should help you identify the two easily.

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Best Place To Buy Fish Online

Best Place To Buy Fish Online – Top Recommendations (And 2 To Avoid!)

Looking for the best place to buy fish online? I get this asked to me a lot and it brings back memories when I started out in the saltwater tank hobby back in the early 90s. Back then you just went to the local fish store to get your fish, live plants, and corals. I remember there was a store called Flying Fish Express and me trying to myself how crazy this is that you can get a fish shipped to you overnight.

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Best Nano Reef Tank

Best Nano Reef Tank – The 7 to Buy (2021 Reviews)

For someone who is a seasoned hobbyist, a nano reef tank offers a challenge with great rewards for either home or office. For a new hobbyist, a nano reef tank offers an entry into the wonderful hobby of reef aquarium keeping for those who take the proper steps.

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Freshwater Shrimp Tank

How to Set up a Freshwater Shrimp Tank: The Ultimate Guide

Shrimp tanks are getting very popular these days. Shrimp with their small size, active nature, and appealing personality have increased in popularity especially with nano or smaller tanks. Shrimp tanks have some special considerations though to be successful. They can be intimating at first because they can be more delicate than fish and require a bit more planning then first.

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Best Driftwood for Aquariums

Best Driftwood For Aquariums – 9 Amazing Pieces For Your Tank!

Driftwood in an Aquarium can look stunning and offer lot of options for designing your aquarium. They can make some really amazing aquascapes, especially heavily planted ones. We need to be careful in our driftwood selection process though. 

Today’s post discusses the best driftwood for aquariums. Much like the best aquarium rocks post earlier, driftwood is not as simple as picking it out of of your local pond or aquarium. Driftwood if not selected or prepped properly can have disastrous results in your aquarium.

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Gold Fish Tank

Goldfish Tank – Your Guide To Successful Goldfish Care

The Goldfish is one of the most popular fish in our aquarium hobby. It may even have been the first fish you had when you first got introduced to aquariums. You may have even come across this article thinking about setting up a Goldfish tank for the first time or for a loved one. They really are an amazing fish that are also easily misunderstood. Because they are usually a first-time fish, a number of us enter into Goldfish care and keeping with little knowledge on what is needed to have them thrive.

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Best LED Lighting For Reef Tanks

Best LED Lighting for Reef Tanks – (2021 Reviews 🏅) & Guide

LED lighting systems are the rage these days for Reef Tanks. It makes a lot of sense why. The best LED lighting systems will have a lot of user friendly features like timers, ramp up and ramp down features, the ability to adjust spectrum, and multiple mount options. The main attraction for LED though, is the power savings features. LEDs are a lot more energy efficient than traditional T5s and metal halides.

In today’s post, I’m going to go through the best LED lighting for Reef Tanks. I will break what these systems are best for, what they are good and not good at, and offer our recommended picks. The end goal is to provide the necessary information you need to make an informed decision as to what is the best LED lighting system for you. Let’s get started!

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Best Canister Filter Reviews

The 11 Best Canister Filters for Aquariums (2021 Reviews and Top Picks 🏅)

For those hobbyists getting serious about aquarium keeping, high quality filtration is top of mind for keeping the best fish only and planted tank systems. While hang on back power filters have their place in community community setups, there are setups with heavier demands like planted and predator tanks that require a high end filtration solution. This is where canister filters come in.

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Bubble Tip Anemone Care Guide (Have Success with BTAs)

Many of us got interested in saltwater fish by seeing clownfish and anemones. It is a very common desire to eventually want to pair your clown with an anemone. While a captive raised clownfish is a easy to care for fish, an anemone is considered a more difficult to keep invertebrate. They require stability, a high amount of light, and good flow. I’m writing this guide because I get asked a lot from clients how they can keep an anemone. I’m going to focus today on the easiest to keep anemone that a clownfish will host – the bubble tip anemone.

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About Aquarium store depot

Who are we?

Our Philosophy

Aquarium Store Depot was established by fellow aquarist, Mark, to simplify the hobby. 

As a regular shopper on other aquarium e-stores, he often grew frustrated at the overwhelming selection of products and the general nature of seeing companies trying to sell the latest and greatest tech (toys) to the industry. 

At Aquarium Store Depot, we seek to change that by offering a limited selection of products vetted out by our creator’s experience as a fellow fish enthusiast. 

We only sell what works, brands we trust, and products we know will make a difference to you

Our mission is to simplify the aquarium hobby so the beginner can thrive.


Are you looking for a new tank?

Head over to the shop to see our selections

Curious about what we have to offer?

Check out our latest posts

Frontosa Cichlid Care

Frontosa Cichlid Care – A How To Guide

It’s very easy to see why the Frontosa Cichlid, Cyphotilapia frontosa, is so popular with aquarists around the world. It’s not only their great looks that keep them as favorites. Frontosa Cichlid Care in summary is simple and they have an easy going nature as long as you select the

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Cryptocoryne Wendtii Care – A How To Guide

Cryptocoryne wendtii is one of the best low-maintenance plants in the aquarium hobby. But what are proper Cryptocoryne Wendtii Care routines. This blog post is all about keeping them healthy and happy!

They are a hardy and adaptable species that come in a wide variety of shapes and colors. These crypts do well under a range of lighting and with or without CO2, making them a great choice for both beginners and more advanced aquarists. Read on to learn more about growing and caring for these popular aquatic plants.

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Wakin Goldfish Care

Wakin Goldfish Care – A How To Guide

The vivid color, attractive double tail and friendly, curious temperament of the Wakin goldfish (carassius auratus) has led to an increase in its popularity in recent years. Originating in Japan like most other carp-descended fish, it was the original prototype, of sorts, of many other fancy goldfish breeds.

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Toadstool Coral Care

Everything You Need to Know About Toadstool Coral Care

Looking to learn about proper Toadstool Coral Care? If so you are in luck! Toadstools are a perfect choice if you are looking for a beautiful, hardy coral to add to your reef tank at home Toadstool corals are known for their bright colors and easy care. In fact, these beauties will thrive in even some of the most basic aquarium setups! Learn more about this fascinating invertebrate below so that it can become an integral part of your underwater ecosystem!

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Kawarimono Koi – A Rare Charm

Kawarimono Koi are a misfit class that does not conform to the ideal judging criteria of the Koi world, i.e., they are non-metallic koi that add their own uniqueness and grace to many garden ponds.

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Java Moss Care

Java Moss Care – A How To Guide

Java moss is a hardy, low-maintenance plant that can be grown in just about any type of aquatic environment. If you’re looking to add some diversity to your tank, or you have a new tank and want to fill it with plants from the start, this article has everything you need! Read on for an informative guide on Java Moss care. We will cover everything from proper environment, conditions, trimming, and more! Check it out!

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Acan Coral Care

Acan Coral Care – How To Care For Your New Coral

If you just got a new Acan coral for your reef tank and are wondering how to care for it, read on! Acan corals are one of the most popular types of coral in the hobby. They come in many colors and shapes, so if you’re looking to fill up some space with color, this is a great option. Let’s go deeper with the essentials on Acan Coral Care so you can have a thriving colony yourself!

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How Long Do Goldfish Live The appeal of goldfish as pets is undeniable. They're cute, active, and beautiful, on top of being relatively easy to care for. Yet, despite this, something you'll commonly hear about goldfish is that they don't live very long. And unfortunately, that's become true for most goldfish in captivity... but not for the reasons you might believe. You see, it's not that goldfish have inherently short lifespans. It's that most people, especially those with insufficient fishkeeping knowledge/experience, don't know what it takes to keep a goldfish alive for its true average lifespan. So the question, how long do goldfish live, doesn’t have a straight answer. It all depends on how well they’re being brought up. Find out more below. How Long Do Goldfish Live? Assuming that the goldfish is healthy and treated with care, its life expectancy can go up to 15-20 years. There are even records of some slim-bodied goldfish, like the feeder goldfish and comet goldfish, living up to 40 years in an outdoor pond, where the natural habitat of a goldfish is most closely mimicked. Meanwhile, fancy goldfish can live up to 5-10 years. This is because compared to slim-bodied goldfish, they are much frailer. Their biological processes are also much easier to disrupt due to their organs being packed into a small, squat, round body. Even the bubble eye, which makes certain species like the black moor so popular, can be a cause of lower life expectancy. In general, slim bodied goldfish can live longer than fancy ones. Lifespan of Different Goldfish Types Wondering how long do goldfish live? Here are the average goldfish lifespans of the most commonly sought types of goldfish: Goldfish Type Average Lifespan (Tank) Average Lifespan (Pond) Common Goldfish 12-20 years 20 years or more Comet Goldfish 10-12 years 15-20 years Oranda Goldfish 10-12 years 10-15 years Fantail Goldfish 10-12 years 10-15 years Bubble Eye Goldfish 5 years or less N/A — they can’t live in ponds Why Do Goldfish Die So Easily? If you’ve been paying attention, you’ve figured out by now that the expected lifespan of your goldfish actually exceeds that of your other seemingly smarter and stronger house pets, like your dog or cat. Yet, it’s more and more common to see that goldfish kept as pets don't make it past 5 years of life. And this leaves a lot of confused first-time goldfish owners asking why their goldfish died so soon and how they can ensure a longer lifespan for their other goldfish. So, a lot of it comes down to the care and living conditions of the goldfish. If you can ensure healthy living conditions and tank or pond water quality for your goldfish, you can expect them to live out their expected lifespan of 15-20 years. However, for goldfish cooped up in a little bowl or small tank, kept in unclean water containing significant amounts of waste, or not given a varied diet, the average life expectancy is 2-5 years. Whoa, that’s a lot of information. But it’s not even the start. Wondering where you went wrong? Find out below. How to Increase Goldfish Life Expectancy? Like all other beings on the planet, the lifespan of a goldfish is determined by how healthy it is. And ensuring that health is on you who are charged with their care. If you're new to keeping these fish, don't freak out. Here's a great videos with tips on how to increase goldfish lifespan increasing goldfish lifespan and, by extension, maintaining proper goldfish care. Clean the Tank Regularly Good water quality is of utmost importance if you want to facilitate a long goldfish lifespan. Especially considering how much waste they produce, it’s crucial to carry out frequent water changes to prevent toxicity. Always do your routine water changes and look into top notch filtration. You should regularly test your water to ensure you maintain lower nitrate levels and not have dangerous levels of ammonia or nitrite. Additionally, get used to using your own intuition. Check how the water looks and how it smells. If you feel something is wrong, trust your gut and whip out your water testing kit. Prevention is always better than cure when it comes to the increasing life expectancy of fish. Feed Your Goldfish a Healthy Diet What most people think of as “fish food,” which are typically pellets and flakes, are actually more proprietary food than anything else. So when we say "healthy diet," we, of course, mean a varied, omnivorous diet. You want to give your goldfish a little bit of everything: pellets and flakes, some vegetables, live foods like worms and shrimp, and even fruit sometimes, to keep health problems at bay. There is a comprehensive guide I have posted all about what do goldfish eat. Check out the guide. You will be blow away at what you can feed your goldfish! Don’t Overfeed Your Goldfish If you’ve had your goldfish a while, you will have noticed by now that they will eat almost anything at any time. In fact, as long as it can fit in their mouth, these omnivorous creatures will attempt to swallow almost any object. All types of goldfish do this. Yes, it’s cute watching a goldfish gobble up the food you lovingly give them. But you must not be tempted to overfeed them. It’s very easy for goldfish to get digestive health problems like bloating and constipation. It might even lead to swim bladder disease. As a consequence, this will lead to a reduced goldfish lifespan. Maintain the Water Temperature If you want your fish to live long, you have to try to make sure that your goldfish tank mimics their natural habitat as closely as possible. An important component of this is maintaining the right water temperature. For fancy goldfish, the optimum temperature is between 65° to 72°F, while for slim-bodied goldfish (like the common goldfish), the right temperature range is 60° to 72°F. Make sure you do proper research on the breed of goldfish you have. If the temperature is too high, your goldfish will experience higher metabolism. Although this will cause them to grow bigger at a faster rate, it will shorten their lifespan. Give Your Goldfish the Space They Need Film, TV, and children's books have had us believing for years that a goldfish can survive in a little fish bowl. This is absolutely incorrect and a sure-fire way to your goldfish to have a short lifespan. The average lifespan of a goldfish in the wild is from 20-40 years, mainly because they have a lot of space to swim around in, less stress, and stable conditions. So when forced to circle in one spot, e.g., in a bowl, a goldfish gets extremely stressed. And when that stress reaches its apex, your pet could die. Not to mention, once again, goldfish produce a lot—and we really mean a lot—of waste. The smaller their tank, the more quickly and easily it will fill up with toxic goldfish waste and lead to your pet dying. That's why goldfish need a large aquarium size. One goldfish needs at least 20 gallons of water to live in. And for every new goldfish you add, you must add another 10 gallons. So, don’t crowd your goldfish in small tanks. Provide Adequate Filtration This is, of course, true not only for goldfish but for any other pet fish. But given how much these guys love to poop, it’s absolutely essential to providing filtration for your goldfish tanks. A moderate filtration rate should be alright in goldfish tanks. Choose Tank Mates Wisely Not all fish should be kept with one another. This includes different goldfish species. The bodies of fancy goldfish, as you may already know, are quite weak and slow compared to goldfish with slim bodies. As such, they should not be kept in the same tank because stronger fish almost always prey on weaker ones and will outcompete them for food. Put Your Goldfish in a Pond If you have very delicate fancy goldfish like pearlscales, ignore this bit—their genetics make it hard for them to survive in ponds. On the other hand, if you have long goldfish of the slim-bodied variety, such as common goldfish, comets, and shubunkins, the best thing you can do to increase their lifespan is to put them in a freshwater pond. In the wild, goldfish live in freshwater streams and ponds. Seasonal variations, plenty of sunlight, and naturally available sources of varied foods (e.g., plants, insects, larvae) all make an outdoor pond the best place for a goldfish to enjoy a longer lifespan. Even some varieties of fancy goldfish, like the fantail variety, can be kept in a pond by fish keepers who are willing to put in the extra effort to create healthy conditions for them. You might have to use implements such as a pond heater. Adjusting the pH is another concern, as well as preventing predators—like birds—from feasting on your goldfish (because, after all, being eaten is an effective way to shorten anyone's lifespan). Ensure Proper Bacteria Levels One of the best ways to ensure a long and healthy life for your goldfish is to allow bacteria to thrive in their tank. Why? Because bacteria keep goldfish waste in check. Not only do goldfish love to eat and don’t know when to stop eating, they—quite predictably—are known to produce very large amounts of waste. And this waste contains toxins like nitrite and ammonia, which, when existing in large amounts in your goldfish tank, can damage your fish’s gills and even cause brain damage. The result? Stress, a shortened lifespan, and maybe even death. In freshwater bodies, the natural habitat of goldfish, the water conditions include naturally occurring bacteria that break down the goldfish's waste. In a home aquarium, however, there are no bacteria. That's why one of the ways of proper care of goldfish is introducing bacteria into their tank. This starts with a proper cycle. Here’s how to do it. How to Introduce Healthy Bacteria into Your Goldfish Tank Let’s take you through all the necessary steps. Step 1: Remove Chlorine from the Tank One of the most common mistakes new goldfish owners make in fish care is bringing their goldfish home to an unprepared tank. Some people think it’s as easy as bringing the goldfish home and dumping it/them in the tank. This is far from the truth. You need to prep your tank for your goldfish weeks and sometimes even months in advance, depending on the breed and amount of goldfish. Start by ridding your goldfish’s new abode of chlorine. Use a conditioner to do this. Although chlorine is helpful in our drinking and bathing water, it inhibits bacteria growth in a fish tank. Step 2: Allow Bacteria Entry into the Fish Tank Once the chlorine is out, the bacteria will start pouring in pretty much all on its own. Not only from the air and the water itself but also from the plants and rocks you use to decorate your aquarium. Even commercially sold bacteria culture is easy to access these days. But your work for your fish doesn’t end there. Step 3: Drop Some Goldfish Food (Or ammonia) in the Tank I know, it sounds a little silly right now; why put fish food in a fish tank with no fish? Because it allows your bacteria to start doing their job. Use fish flakes or pellets for this purpose. When this food disintegrates inside the tank, it will release ammonia. The bacteria, in turn, will consume this ammonia. In a few weeks, you will have a self-sustaining bacteria ecosystem inside your fish tank. A more modern technique would be to use ammonia from a manufacturer like Dr. Tim's Aquatics. This is what I'm used to doing for my fresh only systems. Once you have no ammonia and nitrites reading when you test your water, it's time to add goldfish! Step 4: Make Regular Water Checks This is very important if you want to sustain healthy living conditions for your goldfish. Why not get yourself a water testing kit to regularly check water parameters? It’ll make your life a lot easier. Do your water changes to keep your nitrates down. Frequently Asked Questions 1. How long can a goldfish live in a bowl? If you're wondering how long can goldfish live in a bowl: not longer than 2 to 3 years. Goldfish bowls are not large enough to sustain a goldfish, which means leaving yours in a bowl will cause your goldfish to be underdeveloped and stressed. Consider that a single goldfish requires at least 20 gallons of water to thrive before putting yours in a bowl. 2. Why do goldfish die so easily? The most common reasons for the lifespan of a goldfish being shortened are ammonia poisoning, excessive nitrate levels, and being kept in a tank that's too small, among other reasons. Therefore, you should make it a point to ensure that your goldfish's tank water is clean and of good quality and provide them enough space to move around. Remember, one goldfish requires at least 20 gallons of water to thrive. 3. How big can a goldfish get? In captivity, slim-bodied goldfish can grow up to 10 inches. Fancy goldfish will typically grow to 6-8 inches. In the wild, these fish might grow up to 12-14 inches in length. The largest ever recorded goldfish, owned by a man in the Netherlands, measured 18.7 inches. 4. What kind of goldfish live the longest? Species of goldfish that live the longest are the common goldfish, shubunkins, and comets. These slim-bodied goldfish types do require a lot of tank space compared to fancy goldfish but have been known to live longer than 10 years. 5. What is the average lifespan of a pet goldfish? On average, pet goldfish live 10 to 15 years. However, if if they aren't kept in good housing conditions, they usually will live no longer than 5 years. 6. How long can goldfish go without food? Up to 2 weeks, depending on their health. Closing Thoughts Out of all the aquarium fish varieties you might choose to populate your home, goldfish are known to live the longest, with proper care. So, it really is a crying shame that these fish have developed a reputation for dying easily and quickly. Don’t help to keep this idea alive. Whether in a tank or pond, treat your goldfish with love and care, and above all, humanely— and they will stay alive as long as they can to keep making you go awww at all of their little fish antics. We hope the tips in our article have helped. We wish your goldfish a long and beautiful life! Meta: If you’re about to get a goldfish, you’re probably wondering how long do goldfish live. No, it’s not normal for them to die soon; here’s how you can prevent it.

How Long Do Goldfish Live? (Its Longer Than You Think!)

The appeal of goldfish as pets is undeniable. They’re cute, active, and beautiful, on top of being relatively easy to care for.

Yet, despite this, something you’ll commonly hear about goldfish is that they don’t live very long. And unfortunately, that’s become true for most goldfish in captivity… but not for the reasons you might believe.

Read More »
Amazon Sword Care

Amazon Sword Care – A How To Guide

The Amazon sword is one of the best-known and most popular aquarium plants in the hobby. Amazon Sword Care is great stepping stone for beginners to more advanced plants and looks good in any tank. One of the Amazon sword’s best selling points is its ease of care. These plants thrive in low-tech setups and ask very little of the aquarist in terms of maintenance.

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