Species: Acyrtus artius, Papillate clingfish

Acyrtus artius Briggs, 1955

Papillate clingfish

Head relatively long (44-47% SL) and broad (78-89% of head length at level of eyes); top lip broad, much wider at front that at side; nostrils distinctly tubular; front nostril with a flap, usually with 2 tips; top jaw with a row of 8-9 blunt to weakly 3-pointed incisors at front, one row of 6-8 equal-sized conical teeth at side; teeth on lower jaw a row of 8-9 blunt to weakly 3-pointed incisors at front, one row of 5-6 equal-sized conical teeth at side; lower corner of operculum with a large, grooved venomous spine, with associated patch of granular tissue at its base; sucker disc large (length 29-36% SL), large C-shaped band of papillae at front (in 7-8 rows), 2 small C-shaped patches of 7-12 papillae at sides immediately behind that front band, center with 2 oval patches of papillae and rear with a large band of papillae (10-11 rows, front papillae of that band small; median fins short; 1 dorsal fin, at rear, no spines, 9; anal fin 7-8, like dorsal fin and under it; pectoral rays 24-27, lower 5-7 rays not markedly reduced in size; fleshy pad on lower pectoral base absent; tail rays 10; female with a large patch of small fleshy projections just before anus; anus slightly closer to sucker than to anal fin origin; no scales; lateral line present as pores on head only.