Genus Bunaka Herre, 1927
|Similar Belobranchus belobranchus, Calumia godeffroyi, Hypseleotris cyprinoides, Philypnodon, Broadhead sleeper|
The greenback guavina (Bunaka gyrinoides) is a species of sleeper goby that inhabits fresh, marine, and brackish waters in estuaries and mangrove swamps from Sri Lanka to Micronesia and Australia. This species grows to a length of 34 cm (13 in), though most do not exceed 15 cm (5.9 in). This species is the only known member of its genus.