Palette Surgeonfish

The palette surgeonfish (or Paracanthurus hepatus), also commonly known as the blue tang or regal tang, is a fish found throughout the warm tropical waters of the Indo-Pacific region, ranging from East Africa and Japan to Australia and the Great Barrier Reef. It inhabits coral reefs at depths of around 2m to 40m. It is recognisable by its royal blue body, black markings and yellow tail. Adults typically reach about 25cm to 31cm in length and weigh up to 0.6kg.

The palette surgeonfish is a species of Least Concern, but is vulnerable to habitat degradation combined with high juvenile mortality. They are highly sought-after in the marine aquarium trade for their striking colours and fame but are not easily bred in captivity. Most specimens are collected directly from the wild, potentially damaging both fish and coral habitats. Climate change, ocean acidification, and coral bleaching threaten the reef ecosystems they depend on for shelter and food. Scientists, conservation groups, and aquaculture institutions seek to reduce reliance on wild-caught fish, with the first captive breeding success in 2016. Marine protected areas, reef restoration projects, and stricter regulation of the aquarium trade play key roles in mitigating pressures. Public awareness campaigns encourage buying responsibly sourced fish, while international conservation efforts protect coral reef ecosystems more broadly. These combined strategies safeguard the palette surgeonfish and help preserve the tropical reef communities where they serve an important ecological role.