Canon EOS R5 with Canon 24-105 mm L-series lens; 39 mm; ISO-1250; f/4.5; 1/400 sec; +0.3 Exposure Bias.
This page is for the Lemon Butterfly (Chaetdon miliaris). This fish is the yellowfish with the black band where its body meets its tailfin. We saw these fish with several others at a man-made reef while in a submarine off the coast of Honolulu.