Common name: Blackspot rainbowfish

General information

The Purple Surgeonfish, Thalassoma purpureum, is a vibrant and active fish that adds both color and dynamism to a saltwater aquarium. Known for its striking purple to blue coloration with a yellow caudal fin, this species is a member of the family Acanthuridae, which includes other popular surgeonfish and tangs. The Purple Surgeonfish is a robust swimmer and requires ample space to roam.

Care

Thalassoma purpureum is a hardy species that adapts well to life in captivity, provided its needs for space and water quality are met. A large tank with plenty of swimming room and stable water conditions is essential. Surgeonfish are known for their herbivorous diet, and the Purple Surgeonfish is no exception. It requires a diet rich in marine algae and vegetable matter to maintain its health and coloration. Supplementing with high-quality prepared foods can also be beneficial.

Reproduction

In the wild, Purple Surgeonfish exhibit a fascinating reproductive behavior known as lekking, where males display vibrant colors and perform ritualistic dances to attract females. While breeding them in captivity is challenging, understanding their natural spawning behaviors can be rewarding for advanced hobbyists.

Habitat

The Purple Surgeonfish is commonly found in coral-rich areas of the Indo-Pacific, from the Red Sea to South Africa and eastward to the Society Islands. They are typically seen in clear lagoon and seaward reefs, often in surge zones where they can be observed grazing on algae. They are known to inhabit depths ranging from shallow waters to about 10 meters.

Geographical distribution includes a wide range across the Indo-Pacific, with sightings reported from the Red Sea and East Africa to the central Pacific, including the Hawaiian and Tuamoto Islands.