Chaetodon auriga (Forsskal, 1775)
threadfin butterflyfish

Chaetodontidae - butterflyfishes

The adult threadfin butterflyfish, Chaetodon auriga, have a long trainling filament from the top of the dorsal fin. The juveniles lack this, but are otherwise similar.

Distribution =   widespread tropical Indo-Pacific
Max size =   20cms