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

Achilles Tang

BAD Fish

Scientific Name Acanthurus achilles

Other Name(s) Red-Tailed Surgeon; Achilles Surgeonfish

Care Level


Achilles Tang

BAD Fish

Dark blue to black; orange large teardrop near tail base; orange and white tail; white stripes at bases of dorsal and anal fins. The Achilles Tang has been severely overharvested by the aquarium trade in Hawaii with populations down to a small percentage of their former numbers. Attempts at captive breeding have been unsuccessful.