Randalls Anthias Fish Male

Randalls Anthias Fish Male

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Keeping a male Randall's Anthias (Pseudanthias randalli) in a saltwater aquarium can be a rewarding experience, but it's important to create the right environment and provide proper care. Here are some steps to successfully care for a male Randall's Anthias in your saltwater aquarium.

Tank Setup

Ensure your aquarium is adequately sized. A tank of at least 75 gallons (around 284 liters) is recommended. Use live rock to provide hiding spots and create a natural environment. Maintain stable water parameters, including a temperature range of 72-78°F (22-26°C) and a specific gravity of around 1.025.

Water Quality

Regularly test and maintain optimal water quality. Keep ammonia, nitrites, and nitrates at minimal levels. Utilize a quality protein skimmer to help with water filtration and removal of organic waste.


Employ a reliable filtration system, such as a sump or canister filter, to remove waste and maintain water clarity. Live rock can serve as both biological filtration and hiding spots for your Anthias.


Randall's Anthias are omnivores. Feed a well-rounded diet that includes high-quality frozen or live foods, such as brine shrimp, mysis shrimp, copepods, and zooplankton. Incorporate marine pellets or flakes to ensure a balanced diet.

Feeding Schedule

These fish have fast metabolisms, so feed your male Randall's Anthias multiple times a day. Frequent feeding helps maintain their health.


Randall's Anthias are generally peaceful but can be territorial, particularly males. Avoid keeping multiple males in the same tank. Select tankmates carefully, choosing other peaceful reef fish and invertebrates that are compatible with Anthias.

Hiding Spots

Provide hiding spots with live rock, caves, or coral branches. This helps reduce stress and aggression and offers security for the Anthias.

Water Flow and Lighting

Replicate their natural habitat with moderate to strong water flow. Use appropriate lighting for the health of your coral and other organisms in the tank.


Quarantine new fish before introducing them to your main tank to prevent disease transmission.

Behavior and Compatibility

In the wild, Randall's Anthias are often found in haremic groups consisting of one male and several females. Keep only one male in your tank to avoid aggression issues. You can keep a small group of females with the male to replicate their natural behavior.


Regularly monitor your fish for any signs of stress, disease, or aggression, and take appropriate actions if issues arise.

Keeping a male Randall's Anthias in a saltwater aquarium can be a fulfilling experience when done correctly. Remember that maintaining a marine aquarium requires dedication and attention to detail, so be prepared to invest the time and resources needed to ensure the well-being of your fish and other tank inhabitants. Consulting with experts and conducting thorough research can help you succeed in this endeavor.