Species: Arcos decoris, Elegant clingfish

Arcos decoris Briggs, 1969

Elegant clingfish

Tadpole shaped, with flattened body and wide flattened head; front nostril with a divided flap; a few fleshy lobes under chin, but nowhere else on head; top lip broad, much wider at front than at sides; upper jaw with 2-3 pairs of rounded incisors at front followed on each side by 2-3 canines and then a row of small conical teeth; lower jaw with 4 pairs of rounded incisors followed by 2-3 canines and then a row of small conical teeth; sucker very large, front and rear parts with a broad band of papillae, central part with 2 close-set patches of papilla, 6-7 rows of flattened papillae across width of front of sucker disc, 8-9 rows across rear of disc, 3 longitudinal rows on each central patch; small flattened fleshy pad on pectoral base without a free posterior margin; dorsal rays 7-8; anal rays 8-9; pectoral rays 22-24; caudal rays 9-10.