Common names: goby (English), gobio (Espanol)
Enypnias seminudus (Günther, 1861)
Silt goby, Tidal goby
Body robust; head broader than deep, cheeks swollen; a pair of thick barbels under chin, 1 prominent barbel under front nostril, a pair of barbells at tip of snout; pore between front edges of eyes, 2 pores above opercle, pores on preopercle; both nostrils tubular; teeth in bands, with some canines, none on sides of roof of mouth; tongue with round tip; gill opening restricted to vertical opening as long as width of pectoral fin base; dorsal fin VII + I, 11-15, 2nd long based, low membrane joins two fins; anal I, 9-10; pelvics fused in disc; tail round, with 17 segmented rays; scales small (42-56 along side), smooth, present behind level of rear of 1st dorsal; 2 very rough scales at base of tail fin; head, breast & belly scaleless.
Dark grey, with ~ 4 irregular wide, oblique white bars on body; white blotch on the pectoral base, with a dark crescent at the base of the fin; head with pale bars under and before eye, and a pale bar back from eye; first dorsal blackish, with white spots on base; second dorsal with ~ 3 dark stripes and a dark margin; tail fin with ~ 4 blackish bars. Male can be all brown, with white submarginal stripes on the dorsal fins.
Size: 7 cm.
Habitat: tide pools.
Depth: 0-5 m.
E Gulf of California to Colombia.