Bicolor Damselfish
Stegastes partitus

1/60s @ f22, Kodachrome 25 slide film, ASA25, Nikonos II w 35mm w 1:2 extension tube, Oceanic flash w aluminum flash reflector

"Stegastes partitus," Wikipedia, the free encyclopedia. Stegastes partitus or the bicolor damselfish is a species of bony fish in the family Pomacentridae found near the sea bed on shallow rocky and coral reefs in the Caribbean Sea, the Gulf of Mexico and off the coasts of Florida.The bicolor damselfish can grow to about 10 cm (3.9 in). The head and the front half of the body are dark grey or black and the rear half is pale, usually with some yellow, with regional variations in the coloring. The large dorsal fin has 12 spines and 14-17 soft rays. The anal fin is also large and has two spines and 13-15 soft rays.
Salt River Canyon, St. Croix, U.S. Virgin Islands