Gobiesox cephalus, the riverine clingfish or smooth clingfish, is a species of clingfish from the family Gobiesocidae.

[1] It is found in the coastal river drainages of the Caribbean from Cuba[2] south to Colombia and Venezuela.

[1] It occurs in freshwater, and sometimes in brackish water, preferring a fast current.

[1][2] It is a solitary species which feeds on fishscales, insects and small fish.

[1] It is the type species if the genus Gobiesox and was described by Bernard Germain de Lacépède in 1800 with Amérique méridionale (Central America) given as the type locality.