Red-Bar Anthias

Greek Name: Pseudanthias cooperi



A Red-Bar Anthias is often referred to by the name Cooper’s Anthias. Males sport the body color of a light pink with a red vertical bar that runs through the middle in the middle of their bodies. Females show more orange with an elongated belly and a red tail. Females and males alike sport an edging of light blue over their fins in the majority of cases. Red-Bar Anthias span a vast area of coverage of habitats, from to the Pacific up to Indian Ocean from East Africa up and all the way to Samoa, Japan and Australia. The Red-Bar Fairy Anthias usually reside in the middle of the areas of the tanks however, they also require caves, ledges and other places to hide. They can grow up 4 inches. Though a tank that is 70-gallon can be sufficient for one fish, when you have a group consisting of a single male and a few females, a larger 125-gallon or more is recommended. The Anthias species have the characteristic of being hermaphroditic. If the dominant male dies the biggest female of the group may change to replace it.
After settling into a fresh aquarium Anthias thrive when provided with a diverse diet consisting of frozen mysis shrimp brine shrimp that are enriched and frozen. Over time they can eat premium flake food that is available in small amounts throughout the day. A refugium that is attached to the tank and cultivates amphipods and copepods will provide an ongoing supply of healthy live food that will keep active planktivore levels.


Approximate Purchase Size: Small: 3/4″ to 1-1/4″, Medium: 1-1/4″ to 2″


Care Level




Color Form

Orange, Pink, Red, White



Reef Compatible


Water Conditions

sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4

Max Size






Minimum Tank

70 gallons


Red-Bar Anthias Information 

The Red-Bar Anthias (Pseudanthias cooperi) Also called Cooper’s Anthias, have a stunning gradient that runs from a section of the body’s red dorsal fins up to their white underbelly. Certain specimens may show some hints of purple or orange. While they’re generally a peaceful fish, males can fight. It is advised to keep them in a group of one male with three females. Males will grow long fins with deep colors and a red tail. This anthias species requires a hefty diet of crustaceans or shrimp and needs room to swim. They’re ideal for a reef tank and must be kept in an aquarium no smaller than 75gallons.

Additional information


Large, Medium, Small

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