Eleotris sandwicensis

Description

Eleotris sandwicensis, the Sandwich Island sleeper, Hawaiian sleeper or oopu, is a species of fish in the family Eleotridae endemic to the Hawaiian Islands, where it can be found in marine, fresh, and brackish waters around the coast. This fish can reach a length of 33 cm (13 in). It is locally important to commercial fisheries and is also used as bait by fishermen after larger fishes. In the Hawaiian language, the fish is also known as oʻopu, ʻoau, ʻowau, and hiʻu kole.