Cheilodipterus_isostigmus & Eviota bifasciata
Diver's Lodge House Reef, Lembeh.
The Dog-Toothed Cardinalfish is the bigger fish cruising by in the upper left. The small ones are Eviota bifasciata, already introduced in a previous posting. The cardinalfish eats smaller fishes so I wonder if he was stalking the school of Eviota or they are still not small enough for him.
Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. Distinguished externally from C. quinquelineatus by the position of the basicaudal spot which is in line with the mid-lateral stripe, and internally by having canine teeth at the end of the lower jaw.