Praealticus semicrenatus (Chapman 1951)

Color in life unknown. Preserved specimen with alternating light and dark bands below eye, dark blotch behind eye and on upper operculum, and around 7-8 bifurcate dark bars on body. Dorsal fin deeply notched; pectoral rays typically 15; segmented caudal rays typically 13-14, middle 6-7 unbranched; pinnately branched supraorbital tentacle; nape cirri absent; posterior rim of anterior nostril with small cirrus (typically unbranched); upper lip margin laterally crenulate; lower lip margin smooth; male with occipital crest; last dorsal ray and caudal peduncle connected by membrane; elongate body, depth at anal-fin origin ca. 6.6-8.1 in SL. Maximum length 6 cm TL (Ref. 90102).

Oviparous, distinct pairing (Ref. 205).

Dorsal spines (total): 13; Dorsal soft rays (total): 18 - 19; Analspines: 2; Analsoft rays: 19 - 20

Adults occur in rocky shores (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).