Triangle Crest Rockskipper

General coloration, brown, with 20-22 pale vertical lines on snout and upper lip, extending posteriorly to lower cheek, and approximately 8 sets of double bars on side. Dorsal fin deeply notched; segmented caudal rays 13-14, branched middle 1-7; pinnately branched supraorbital tentacle; lacking nape cirri; posterior rim of anterior nostril with small cirrus, typically branched; upper and lower lip margins crenulate; males with triangular occipital crest (smaller in females); last dorsal ray and caudal peduncle connected by membrane; elongate body, depth at anal-fin origin ca. 6.1 in SL. Maximum length 7 cm TL (Ref. 90102).

Oviparous, distinct pairing (Ref. 205).

Dorsal spines (total): 13; Dorsal soft rays (total): 17 - 19; Analspines: 2; Analsoft rays: 18 - 19

Adults inhabit reef flats in the intertidal zone and also found in rocky shores where tidal surges are strong (Ref. 90102). Oviparous. Eggs are demersal and adhesive (Ref. 205), and are attached to the substrate via a filamentous, adhesive pad or pedestal (Ref. 94114). Larvae are planktonic, often found in shallow, coastal waters (Ref. 94114).

Praealticus triangulus, the triangle-crest rockskipper is a species of combtooth blenny found in the eastern Indian ocean, around the Andaman Islands.