Istiblennius edentulus (Forster & Schneider, 1801)
Rippled rockskipper
Istiblennius edentulus
photo by Wirtz, P.

Family:  Blenniidae (Combtooth blennies), subfamily: Salariinae
Max. size:  16 cm TL (male/unsexed); 13.2 cm SL (female)
Environment:  reef-associated; depth range 0 - 5 m
Distribution:  Indo-Pacific: Red Sea and East Africa to the Line, Marquesan, and Tuamoto islands, north to southern Japan, south to Lord Howe and Rapa.
Diagnosis:  Dorsal spines (total): 12-13; Dorsal soft rays (total): 19-21; Anal spines: 2-2; Anal soft rays: 21-23. Males darkly dusky with 5-6 pairs of bands on body and pale stripes on dorsal fin; develop a crest. Females paler in color, bands broken into spots posteriorly, dorsal fin spotted (Ref. 4404).
Biology:  Intertidal (Ref. 31184, 48636). Adults are common in areas with large rubble pieces which are often used to built breakwaters or to support jetty-pylons (Ref. 48636). They hide in cracks or holes when not feeding. They jump out of the water in energetic skippings to another pool when pursued (Ref. 2158, 48636). May remain out of water under rocks or seaweeds (Ref. 31184). They breathe air when out of water (Ref. 31184). Feeds on filamentous algae (Ref. 89972). 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: 27 March 2009 Ref. (123251)
Threat to humans:  harmless
Country info:   
 

Entered by: Capuli, Estelita Emily - 15.07.92
Modified by: Valdestamon, Roxanne Rei - 18.10.14
Checked by: Williams, Jeffrey T. - 05.10.95

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