Stegastes leucostictus is a species of damselfish found near the sea bed in shallow waters on the western fringes of the Atlantic Ocean.

[3] Stegastes leucostictus is a fairly deep-bodied, oval, laterally compressed bony fish, and grows to about 10 cm (3.9 in) long.

It is rather variable in colour, but is generally dark blue or brown along the top of the head and the ridge of the back and yellowish on the flanks.

It has a large, black eye-spot ringed in blue, centered where the dorsal fin spines join the soft rays.

[3] Stegastes leucostictus feeds mainly on seaweed, but also consumes marine worms, amphipods, foraminiferans and gastropod molluscs.