Lyretail Anthias Care – A Complete Guide

Last Updated: May 19, 2026

If you’re like me, then one of your favorite things to do is sit back and watch your reef tank filled with beautiful fish swimming around. Among the many different types of fishes that can be kept in a reef tank, lyretail anthias (Pseudanthias squamipinnis) are perhaps some of the most colorful and striking. Lyretail anthias require a fair bit of care, but if you’re up for it they are definitely worth keeping. In this article I’ll provide a complete guide on how to take care of lyretail anthias so that you can enjoy them in your reef tank for years to come.

These aren’t fish you set up and forget. They’re demanding, they eat constantly, and they will show you every water quality problem your tank has. But when they’re thriving in a mature reef, there’s nothing quite like watching a school of them dart and hover in open water. That image is worth earning.

Species Overview

Scientific Name	Pseudanthias squamipinnis
Common Names	Lyretail anthias, scalefin anthias, sea goldie, lyretail fairy basslet, orange seaperch
Family	Serranidae
Origin	Indo-Pacific Ocean (Indo-West Pacific)
Diet	Carnivore
Colors	Orange, purple, yellow, red
Care Level	Intermediate to Advanced
Temperament	Semi-aggressive
Minimum Tank Size	125 gallons (473 liters)
Max Size	5 inches (12.7 cm) female; 6 inches (15 cm) male
Temperature Range	76–82°F (24–28°C)
pH Range	8.0–8.4
Salinity	1.025 (35 PPT)
Reef Safe	Yes
Available As Tank Bred	Uncommon

What People Get Wrong

Most hobbyists underestimate the feeding commitment. Lyretail anthias are not “set up and leave” reef fish. They have high metabolisms and need to eat multiple times a day. In the wild, they’re constantly picking planktonic organisms from the water column. Replicating that in captivity takes real effort, and failing to do so is the fastest way to lose these fish. Don’t buy lyretail anthias unless you can feed them at least twice a day, every single day.

The second mistake is adding them to immature systems. These fish do fine in stable, established tanks but will stress and decline in anything newly set up. Aim for a system that has been running at least six months to a year before considering them.

The Hard Rule

Never add lyretail anthias to a tank under 125 gallons (473 liters). Full stop. They need open water column space, and the harem group dynamics require room for multiple individuals to establish territories without constant fighting. A tank that’s too small creates chronic stress, suppresses immune function, and kills them slowly.

Origins And Habitat

The lyretail anthias goes by many names but is pretty easy to identify.

Contrary to popular belief, these fish are not true anthias species belonging to the Anthias genus. Instead, they belong to the Pseudanthias genus. As a fish species of Pseudanthias, these medium-sized fish have very bright colors that bring great contrast to the aquarium setting.

Lyretail anthias are native to the Indo-West Pacific Ocean. They can be found throughout the Red Sea as well as off the coasts of Japan, Australia, and South Africa. There, these fish form huge harems in clear tropical waters consisting of one male and up to 10 females. They depend on coral reefs for protection and food, mainly zooplankton.

Though these peaceful fish can be found throughout many ecosystems, there is little physical difference between populations.

Hermaphroditism And Sexual Dimorphism

Lyretail anthias demonstrate protogynous hermaphroditism, much like clownfish. This is the evolutionary ability for the fish to change from female to male depending on internal and external environmental factors.

Protogynous hermaphroditism is designed to increase reproduction rates and is especially successful in harem communities. Lyretails like to stay in large aggregations of about 10 females for every one male. When this male leaves or dies, a female will undergo the transition to male to fill this space and to optimize reproduction rates.

On top of this, lyretails display sexual dimorphism. Simply put, this is when male and female individuals of the same species differ in appearance. For the lyretail anthias, this difference is significant.

Male lyretail anthias grow considerably larger than females, maxing out at about 6 inches (15 cm) while females typically stay under 3 inches (7.6 cm). The bigger difference is in color.

Female lyretail anthias are sherbet-colored with a yellowy-pink body and bright yellow underbelly. The eyes have hints of purple which are further accented by the purple streak that runs along their cheeks.

Male lyretail anthias are much more ornate. These fish are dark purplish-red with contrasting red fins. Like females, they have a bright red streak that runs along their cheeks. They also have an identifiable elongated dorsal spine and some extension to the rest of their fins.

In the case of a missing male, females have the ability to transition into a male in under a month. If a female harem has been established without a male, the most dominant female will make the transition in about 170 to 280 days.

Lyretail Anthias Tank Requirements

Though beautiful fish, lyretails aren’t the easiest fish to keep in the aquarium. This is largely due to their spatial and dietary needs. Still, the lyretail anthias is considered to be one of the easier Pseudanthias species to maintain.

Lyretails live above the reef and need open swimming space. In the tank setting, hobbyists also need additional space to comfortably keep large numbers of these fish together. Because of this, they need at least a 125 gallon aquarium (473 liters).

Though these fish will look their best against a natural backdrop of coral, this isn’t always necessary. One of the important factors to remember when keeping these fish is that they are active zooplankton feeders, constantly searching for floating foods.

A reef aquarium setting will naturally help to maintain populations of microorganisms so that they don’t need to be manually supplemented as often.

Are They Hardy?

Though lyretails aren’t necessarily sensitive to water parameters, they do best when conditions are maintained and stable. These fish will show their brightest colors with minimal nitrates and phosphates in a reef tank setting.

Lyretail anthias are generally hardy, though they should only be kept in matured and established systems.

Reality Of Keeping Lyretail Anthias

Here’s what daily life with lyretail anthias actually looks like: you’re feeding twice, ideally three times a day. Frozen mysis, frozen brine, copepods from a refugium or pod culture. These fish are always on the move, always hunting the water column, and they’ll make your feeding schedule non-negotiable.

In a mature reef with a refugium cranking out pods, they’ll thrive with less intervention. In a tank without that natural food source, you’re doing the work manually. Both approaches can work, but only if you’re consistent. A week of inconsistent feeding will show up on the fish as dulled color and reduced activity. Two weeks and you may start losing individuals.

On the positive side: they’re absolutely stunning to watch as a group. The male displays to the females, the females interact with each other, and the whole school moves through the tank with a kind of orchestrated energy that’s hard to describe. If you’ve put in the work to build a mature reef, these fish are the reward.

Temperament

Lyretail anthias are active fish. They will usually stay at the top of or in front of the live rock, swimming loosely in their harem.

In general, these fish keep to themselves if conditions are met. Male lyretail anthias can become territorial at times, though they won’t inflict injury on another fish.

It is also common to see females picking at each other, especially if there is no male present in the tank. At that point, the biggest and brightest females may work out which one will assume the position of male in the group.

Are They Aggressive?

The lyretail anthias is regarded as one of the more aggressive species within the Pseudanthias genus. They are slightly sensitive to imperfections in saltwater tank conditions and parameters, which can affect their individual behaviors.

Lyretails are constantly searching for food. If food supplies run low, these fish will become aggressive toward other fish who might compete for resources. This is especially true for smaller and slower-moving species.

In the same way, lyretails can become aggressive if space is limited. Though the males are mostly regarded as being territorial, the females will chase after other fish if they feel cramped.

Lyretails are only concerned with food that is free-floating in the water column and won’t pick at the rocks like other foragers. These fish can be safely kept with soft corals, large polyp stony (LPS) corals, and small polyp stony (SPS) corals without concern.

Though there is usually no risk with keeping lyretail anthias in a reef setup, it’s always possible for an individual fish to start picking at coral unexpectedly.

Tankmates

Not only are lyretail anthias reef-safe, but they’re also a great community fish overall. Space and dietary strains can cause individual fish to become more aggressive, but they can usually be kept with an assortment of fish.

Lyretail anthias are best kept with other reef species. This includes damselfish, tangs, wrasses, and some angelfish.

To help prevent issues with aggression, allow lyretails their own space within the aquarium. These fish will mainly stay at the top of or in front of the rockwork. Avoid other smaller fish that like to stay in the same areas for extended periods of time.

Most hobbyists pick up a group of all-female lyretail anthias and allow them to pick a male among themselves. It’s best to either pick all small juvenile females or a group of females where one is noticeably larger. Immediately adding a male to the tank can cause rejection and increased aggression between individuals.

Though these fish are a shoaling species, they actually do fine on their own in the aquarium. Many reefers have had luck keeping only one lyretail anthias by itself in a full reef tank setting. There have been no noticeable differences in behavior and the fish remains present and active.

Most times, a single fish will transition to a male when kept alone.

There are many different kinds of anthias in the aquarium hobby, both true ones and Pseudanthias. The problem is that one is more beautiful than the next, making it difficult to pick and choose. Pick species that can tell each other apart, like:

• Bartlett’s anthias (Pseudanthias bartlettorum)
• Dispar anthias/Madder seaperch (Pseudanthias dispar)
• Bicolor anthias (Pseudanthias bicolor)
• Evansi anthias (Pseudanthias evansi)

Some hobbyists have seen aggression between males of each species, though there is usually no cause for concern. If keeping multiple species of anthias together, the tank should be much larger than the minimum 125 gallons (473 liters).

Diet

The hardest part of owning lyretail anthias is keeping them fed. These are very active fish with high metabolisms that need to be fed regularly. This is also in addition to their need for small planktonic foods, similar to their natural diet in the wild.

Luckily, most hobbyists have had success getting their lyretails to accept a wide variety of aquarium foods. For best coloration, provide a varied diet.

Lyretail anthias are carnivores. They need a good assortment of meaty foods to meet their dietary demands. This should include a selection of live, frozen, and freeze-dried options, like brine shrimp, mysis shrimp, and black worms.

If you’re struggling with getting your fish to eat larger foods, try feeding copepods or a specialized food, like Reef Frenzy by Larry’s Reef Services (LRS).

Not all lyretails will readily accept flake or pellet food at first, and some may never accept anything other than their preferred foods. However, if your lyretail anthias do accept other foods, high-quality flake foods can serve as a staple in the diet.

To ensure that your fish are always happy and healthy, provide feedings 2 to 3 times a day. They do better in a reef aquarium with lots of fauna in the tank such as copepods and zooplankton. You can supplement plankton with foods like Benereef, which contains planktivore content that lyretail anthias love.

Should You Get Lyretail Anthias?

Good Fit If:

• You have a mature, established reef system that has been running at least 6 to 12 months
• Your tank is 125 gallons (473 liters) or larger with open swimming space in the water column
• You can commit to feeding 2 to 3 times daily without exception
• You have a refugium or pod culture to supplement natural food supply
• You want a schooling species that adds dramatic movement and color

Avoid If:

• Your tank is under 125 gallons (473 liters)
• Your system is newer than 6 months old
• You travel frequently or can’t maintain a consistent feeding schedule
• You’re new to saltwater aquariums
• You’re not prepared to quarantine before adding to the display

Common Diseases

Though lyretails are hardy fish, they can succumb to common aquarium illnesses rather quickly. Most anthias available in stores are affected by one ailment or another. Because of this, it’s definitely recommended to quarantine before adding them to the main display.

One of the most common marine diseases your lyretail anthias are likely to encounter is Uronema, usually Uronema marinum. This is a free-living ciliate parasite that uses the host for living, feeding, and reproducing.

Though most life stages are fulfilled while actively infecting the fish, the parasite can enter the water column and affect other organisms. It can survive on bacteria and detritus within the system indefinitely, meaning that it will survive through fallow periods.

Uronema is very quick to kill and should not be ignored. Unfortunately, its symptoms can be difficult to diagnose, which can take up valuable treatment time. The main symptoms are red bumps and abrasions that eventually grow into large, open sores. Discoloration, flashing, loss of appetite, and heavy breathing also follow.

Unfortunately, many hobbyists opt to euthanize their fish once this parasite has displayed itself in the home aquarium. Usually, the fish is too far gone and it’s better to sacrifice one to save the whole. However, if you manage to catch it early enough and have the proper quarantine setup and medications, there is still some hope.

The best course of treatment is a 5-minute freshwater dip and a dose of metronidazole every 48 hours for 10 to 14 days. For best results, feed medicated food with a binder like Seachem Focus and Seachem MetroPlex.

Introducing this parasite into the main display will cause it to live in the aquarium indefinitely. The best way to prevent it from devastating your tank is by quarantining.

Where To Buy

You can find lyretail anthias at well-stocked local fish stores or online from reputable marine fish suppliers. I recommend buying from sellers who can confirm the fish are eating in-store before you purchase.

• Flip Aquatics – A reliable source for quality marine fish with good acclimation practices
• Dan’s Fish – Another solid online option for saltwater livestock

Final Thoughts

The lyretail anthias is a beautiful saltwater fish built for the reef aquarium. In the wild, these fish form harems and feed on planktonic organisms within the water column. That diet can prove to be difficult for some hobbyists, though lyretails usually adapt well to aquarium foods and conditions once they’re settled in.

One of the major diseases to watch out for is Uronema, though they are very hardy after being properly acclimated. If you have the tank size, the feeding commitment, and a mature reef system, lyretail anthias will reward you with some of the most dynamic and visually striking behavior in the saltwater hobby.