Red Bar Anthias

Pseudanthias cooperi

(0 Reviews)

Red Bar Anthias

Red Bar Anthias

Pseudanthias cooperi

(0 Reviews)

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Red Bar Anthias Care Facts

Care Level: Moderate
Temperament: Peaceful
Maximum Size: 4 inches
Reef Safe: Yes
Diet: Carnivore
Origin: Indo-Pacific
Acclimation Time: 2+ hours
Minimum Tank Size: 75 gallons

The Red-Bar Anthias (Pseudanthias cooperi), also known as Cooper's Anthias, have a beautiful gradient from their red dorsal fins to the white underbelly. Some specimen will have hints of orange or purple. While they are a peaceful fish, two males may fight. It is recommended to keep them in a harem; one dominant male with 2-3 females. The male will develop long fins and deep colors. They require a meaty diet consisting of mostly shrimp or other crustaceans, and require room to swim. They are perfectly suited for a reef tank and should be kept in no tank smaller than 75 gallons.


Discover the Red Bar Anthias at


Are you a passionate saltwater aquarium hobbyist seeking to add a vibrant splash of color and activity to your underwater world? Look no further than the Red Bar Anthias (Pseudanthias cooperi), a captivating marine species that can elevate the visual appeal of your saltwater aquarium. This comprehensive product description will delve into various aspects of keeping the Red Bar Anthias, providing essential information for both seasoned aquarists and beginners alike.


Habitat of the Red Bar Anthias : A Taste of the Western Pacific


The Red Bar Anthias is indigenous to the Western Pacific Ocean, mainly found in the waters of Fiji, Tonga, and New Caledonia. These fish are typically encountered in the clear, warm waters of coral reefs, making them a popular choice for saltwater aquarium enthusiasts seeking to recreate a piece of the ocean within their homes.


Reef Compatibility of the Red Bar Anthias : Harmony in Your Reef


One of the remarkable qualities of the Red Bar Anthias is its reef-safe nature. They are known to peacefully coexist with corals and other invertebrates, making them an excellent addition to reef aquariums. Their peaceful demeanor and preference for midwater swimming make them perfect for such environments.


Size and Lifespan of the Red Bar Anthias : Small Wonders


Red Bar Anthias are relatively small, with mature adults reaching a size of about 3 to 4 inches (7.5 to 10 cm). In terms of lifespan, when kept in optimal conditions, they can live for up to 5 years, providing enjoyment for aquarists.


Diet of the Red Bar Anthias in Captivity


In captivity, Red Bar Anthias thrive on a diet of high-quality marine flake or pellet food, supplemented with live or frozen fare such as brine shrimp, mysis shrimp, and copepods. Regular feeding is essential to ensure their health and vitality.


Aquaculture and Availability of the Red Bar Anthias: Sustainable Beauty


Red Bar Anthias are being successfully aquacultured, which means they are readily available to hobbyists. This is a positive development as it reduces the pressure on wild populations and ensures a sustainable supply for the aquarium trade.


Compatibility of the Red Bar Anthias with Other Fish and Invertebrates: Friendly Neighbors


Red Bar Anthias are generally peaceful and social, making them compatible with various tankmates. Here are five compatible species to consider:

  • Royal Gramma (Gramma loreto): Known for their striking colors and peaceful temperament, Royal Grammas make great companions for Red Bar Anthias.
  • Yellow Coris Wrasse (Halichoeres chrysus): These wrasses are known for their vibrant colors and playful behavior, which can complement the Red Bar Anthias.
  • Firefish Goby (Nemateleotris magnifica): Their elongated, colorful bodies and peaceful nature make Firefish gobies a great addition to your aquarium.
  • Cleaner Shrimp (Lysmata amboinensis): These shrimp add diversity to your tank and serve as natural cleaners, helping keep your aquarium in top condition.
  • Banggai Cardinalfish (Pterapogon kauderni): These cardinals are known for their distinctive appearance and peaceful nature, making them suitable tankmates for the Red Bar Anthias.

Sexual Dimorphism of the Red Bar Anthias: Male Charm


Male Red Bar Anthias tend to be larger and sport the distinctive red and pink coloration that gives them their name. Females, on the other hand, are typically smaller and less colorful.


Juvenile to Adult Coloration Changes in the Red Bar Anthias : A Colorful Evolution


Juvenile Red Bar Anthias often exhibit a less vibrant coloration than their adult counterparts. As they mature, the males develop their signature red and pink bars, which become more prominent and intense.


Temperament of the Red Bar Anthias : Peaceful Presence


Red Bar Anthias are generally peaceful, but they can be somewhat shy and may benefit from the presence of other tankmates to help them feel secure. Their schooling behavior is a sight to behold, as they often form tight-knit groups, adding to the visual appeal of your aquarium.


Tank Requirements of the Red Bar Anthias: Creating the Ideal Habitat


To ensure the well-being of your Red Bar Anthias, consider the following tank requirements:

  • Minimum Aquarium Size: A tank with a capacity of at least 70 gallons is recommended for a small group of Red Bar Anthias. Larger tanks are ideal if you plan to keep a larger school.
  • Water Conditions:    
    • pH: Maintain a stable pH level between 8.1 and 8.4.
    • Salinity: Keep salinity levels at 1.020 to 1.025.
    • Water Temperature: Maintain a water temperature range of 74°F to 78°F (23°C to 26°C) to mimic their natural habitat.
    • Water Flow: Red Bar Anthias prefer moderate water flow, allowing them to swim comfortably without being pushed around.

Other Common Names for the Red Bar Anthias: A Variety of Monikers


The Red Bar Anthias is known by the common names "Cooper's Anthias" and "Fiji Lyretail Anthias."


Why Choose the Red Bar Anthias from Trust in Excellence


Choosing to acquire Red Bar Anthias from offers several distinct advantages:

  • Quality Assurance: is known for its commitment to sourcing healthy, well-acclimated specimens, ensuring a higher chance of success in your aquarium.
  • Variety: The website often offers a variety of sizes and colors, allowing you to select the Red Bar Anthias that best suits your aquarium and preferences.
  • Expert Advice: provides valuable information and expert advice to help you create an ideal environment for your Red Bar Anthias and other marine life.

In conclusion, the Red Bar Anthias is a captivating addition to any saltwater aquarium, known for its striking appearance and peaceful demeanor. This guide has provided essential information on their habitat, compatibility, size, diet, aquaculture status, and tank requirements. By choosing the Red Bar Anthias from, you are taking a step toward enhancing your marine aquarium's beauty and diversity. Bring the beauty of the Western Pacific Ocean to your home and enjoy the vibrant presence of these stunning fish.

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