Bicolor damselfish

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.

Behaviour

Unlike most other members of the genus Stegastes which eat filamentous algae, the bicolor damselfish feeds on plankton. It forms loose groups of up to twenty individuals and defends a territory over a rocky reef with plenty of crevices in which to lurk.