Antennablennius bifilum (Günther, 1861)
Horned rockskipper
photo by Wirtz, P.

Family:  Blenniidae (Combtooth blennies), subfamily: Salariinae
Max. size:  7.5 cm TL (male/unsexed)
Environment:  demersal; marine; depth range 18 - 37 m
Distribution:  Western Indian Ocean: Mozambique to South Africa (Eastern Cape), Madagascar, Comoros, Aldabra and Mascarenes; not known from Red Sea.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 17-19; Anal spines: 2-2; Anal soft rays: 17-20. The species can be distinguished from Antennablennius persicus by the following characters: number of segmented ray in dorsal fin, 17-18 (vs. 19-20 in A. persicus), anal fins 18-19 (vs. 20); white bars restricted to the ventral half and white spots on the anterior part of body (vs. white narrow bars on the anterior unspotted part of body below spinous portion of the dorsal fin); three black bars ventrally on the head (vs. with a black bar ventrally on the head at angle of mouth (Ref. 132085).
Biology:  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).
IUCN Red List Status: Least Concern (LC); Date assessed: 24 March 2009 Ref. (130435)
Threat to humans:  harmless


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