Species: Derilissus nanus, Dwarf clingfish

Derilissus nanus Briggs, 1969

Dwarf clingfish

Body slender, only slightly depressed at front; head narrow, snout short, profile angular, with mouth opening at front; eyes large; front nostril an elongate tube, without a flap; rear nostrils slightly tubular; top lip broad at front, narrow on sides; teeth in 1 row on both jaws, with 3-pointed incisors at front of both jaws; 5-7 short, blunt gill rakers; median fins short; 1 dorsal fin, at rear, no spines, 6-7; anal fin 6-7, like dorsal fin and under it; 1st ray hidden on dorsal and anal fins; pectoral rays 18-21; a poorly developed fleshy pad on lower pectoral base; sucker medium sized, papillae small, center with a cluster of 4 papillae, followed by a forward pointing  V shaped group of 5 papillae; no scales; lateral line present as pores on head only.