Species: Gobiosoma grosvenori, Rockcut goby

Gobiosoma grosvenori (Robins, 1964)

Rockcut goby

Body robust; head rounded, broader than deep, somewhat depressed; snout blunt; anterior nostril a short tube, posterior a raised rim; 1 pore between eyes; 2 pores over opercle; 3 preopercular pores;mouth small, a little under snout; upper lip separated from snout by a groove along its top edge; teeth in 4 rows in upper jaw, 3 in lower jaw, outer row of teeth enlarged in upper and lower; no teeth on roof of mouth; tongue truncate to slightly bilobed; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VII (none  filamentous) + I, 9; length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 8 (7-8); pectoral fin 17 (16-18) elongate reaching to origin of 2nd dorsal fin; pelvic I, 5, fins almost completely separate, shape elongate, anterior membrane of fin very small, fin extends ¾ distance to anus; caudal fin segmented 17, rounded; scaled from tail fin base to pectoral fin, with a narrow tongue of scales on the front body; upper narrow naked area from upper pectoral fin base to origin of second dorsal fin; lower narrow naked area from lower pectoral fin base to anal-fin origin; four very rough scales at base of tail fin; scales in longitudinal series 31-35; scales easily shed; no lateral line.