Moorish idol

Description:

The moorish idol got its name from the Moors of Africa, who purportedly believe(d) the fish to be a bringer of happiness. Moorish idols are also popular aquarium fish. With distinctively compressed and disk-like bodies, moorish idols stand out in contrasting bands of black, white and yellow which make them attractive to aquarium keepers. The fish have relatively small fins, except for the dorsal fin whose 6 or 7 spines are dramatically elongated to form a trailing, sickle-shaped crest called the philomantis extension. Moorish idols have small terminal mouths at the end of long, tubular snouts; many long bristle-like teeth line the mouth. The eyes are set high on the fish's deeply-keeled bodies; in adults, perceptible bumps are located above each. The anal fin may have 2 or 3 spines. Moorish idols reach a maximum length of 23 centimeters (9.1 in). The sickle-like dorsal spines shorten with age. Sponges, coral polyps, tunicates and other benthic invertebrates constitute the bulk of the moorish idol's diet in the wild. Captive moorish idols typically are very picky eaters..

Habitat:

A common inhabitant of tropical to subtropical reefs and lagoons, the moorish idol is notable for its wide distribution throughout the Indo-Pacific. Often seen alone, Moorish idols also form pairs or occasionally small schools, especially as juveniles. They are diurnal fish, sticking to the bottom of the reef at night, adopting a drab coloration. Like butterfly fish, they mate for life. Adult males display aggression toward one another.