Common name: Striped-fin surgeonfish

General information

The Kole Tang, scientifically known as Ctenochaetus marginatus, is a popular marine fish among aquarists due to its vibrant colors and active nature. It is characterized by its oval body shape, distinct yellow ring around its eye, and the small, comb-like teeth that are typical for the genus Ctenochaetus. These teeth are used to scrape algae from rocks and coral.

This species is often confused with other surgeonfish but can be distinguished by its unique coloration and the pattern of spots on its body. It is a relatively peaceful fish that can coexist with a variety of tank mates.

Care

Kole Tangs require a tank with plenty of live rock to graze on microalgae. They are active swimmers and need ample space to move around, so a larger tank is recommended. They are herbivores and their diet should consist mainly of marine algae, though they will also accept high-quality dried seaweed and algae-based aquarium foods.

Regular water changes and stable water conditions are crucial for the health of Kole Tangs. They are prone to diseases like Marine Ich (Cryptocaryon irritans) if stressed, so maintaining a stress-free environment is important.

Reproduction

In the wild, Kole Tangs are broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs. These eggs then become part of the planktonic drift. Reproduction in the home aquarium is rare and not well documented.

Habitat

Kole Tangs are found in the Indo-Pacific region, from East Africa to the Hawaiian, Marquesan, and Ducie islands, north to southern Japan, south to the Great Barrier Reef, New Caledonia, and the Austral Islands. They inhabit coral reefs and rocky areas, usually at depths of 10 to 60 meters.

They are often seen grazing on algae in the wild, which plays a significant role in the health of coral reefs by preventing algal overgrowth.