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Getting to Know the Yellow Back Anthias
The Yellow Back Anthias (Pseudanthias flavoguttatus) is a stunning addition to any marine aquarium, instantly brightening your tank with its vivid yellow and orange hues. Native to the tropical reefs of the Indo-Pacific, this species is renowned for its graceful swimming and lively social behaviour. Yellow Back Anthias thrive in groups and are best kept in larger aquariums that can replicate their natural reef environment.
These fish are moderately peaceful and bring dynamic movement and colour to your reef community. While they are visually striking, they do require attentive care to meet their specific needs, especially in diet and water quality.
Choosing Your Yellow Back Anthias
When selecting Yellow Back Anthias, look for vibrant colours and active swimming behaviour. Healthy fish will have clear eyes and intact fins without any signs of disease or stress. It’s beneficial to choose individuals already feeding on prepared foods to ease their transition into your aquarium.
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Tank Setup and Environment
Yellow Back Anthias require a well-established tank of at least 250 litres to accommodate their active schooling nature. Plenty of live rock for hiding and swimming around will make them feel secure. A deeper tank is preferred to allow natural vertical swimming habits.
These fish thrive in reef environments with moderate to strong water movement that simulates natural ocean currents, helping keep them healthy and active. A stable and clean environment is essential for their wellbeing.
Feeding and Nutrition
A varied diet is vital for Yellow Back Anthias to maintain their vibrant colours and energy. Feed them several small meals throughout the day to mimic their natural feeding pattern.
Frozen mysis shrimp
Brine shrimp
Marine pellets enriched with vitamins
Chopped seafood such as shrimp and clam
Algae-based flakes for supplementary nutrition
Regular feeding and high-quality foods help support their fast metabolism and active lifestyle.
Behaviour and Compatibility
Yellow Back Anthias are generally peaceful but do best in groups of at least six individuals to promote natural social behaviour and reduce stress. They coexist well with other peaceful reef species but may become territorial if kept in too small a group or tank.
Avoid housing them with aggressive fish or larger predators, as this can cause stress and harm. Their schooling nature makes them a lively and beautiful community addition.
Water Conditions and Flow
Temperature 24–27°C
pH 8.1–8.4
Salinity 1.023–1.025
Moderate to strong flow to mimic reef currents and maintain water quality
Maintaining stable water parameters is key to keeping Yellow Back Anthias healthy and stress-free.
Health and Longevity
Yellow Back Anthias can be sensitive to poor water quality and sudden changes in their environment. Regular water testing, quality filtration, and gentle acclimatisation when introducing new fish will help prevent common diseases like marine ich. With proper care, these fish can live up to 5 years or more.
Final Thoughts
The Yellow Back Anthias is a vibrant, social fish that brings energy and beauty to a reef aquarium. While they require attention to diet and environment, their lively behaviour and stunning colours reward dedicated hobbyists. Providing a spacious, stable tank with quality food and compatible tank mates will ensure your Yellow Back Anthias thrive.
