The Good Fish / Bad Fish Tool
for Saltwater Aquariums,
Award-winning tool for creating ocean-friendly aquariums.

Blue Tang

BAD Fish

Scientific Name Paracanthurus hepatus

Other Name(s) Hippo Tang; Palette Surgeonfish; Pacific Blue Tang; Hepatus Tang; Regal Tang

Care Level


Blue Tang

BAD Fish

Blue body; dark/black hook shaped marking between eye and tail; tail is yellow bordered in black. Since being cast as “Dory” in the movie “Finding Nemo”, Blue Tangs are disappearing from their native reefs from increasing hobby demand. Captive-bred Blue Tangs have been available from Biota, but until they are aquacultured regularly, they will remain on the Bad Fish list.