Istiblennius colei (Herre, 1934)
Cole's rockskipper
Cole's rockskipper

Family:  Blenniidae (Combtooth blennies), subfamily: Salariinae
Max. size:  11.8 cm SL (male/unsexed); 10.3 cm SL (female)
Environment:  demersal; marine; depth range - 2 m
Distribution:  Western Pacific: known only from Culion and Panay islands, Philippines.
Diagnosis:  Dorsal spines (total): 13-15; Dorsal soft rays (total): 18-20; Anal spines: 2; Anal soft rays: 19-21. Dorsal fin XIII to XV, 18 to 20 (usually XIV); membrane between spinous and segmented-ray portions notched deeper than half length of first segmented ray; membrane from posteriormost ray attaching to point ranging from between dorsal edge of caudal peduncle well in advance of caudal-fin base to dorsal edge of caudal fin just posterior to base (usually anterior to caudal-fin base); posteriormost anal-fin ray not bound by membrane to caudal peduncle; skin covering anal-fin spines and anterior segmented rays not modified in adult males; pectoral-fin rays 14 or 15 (15 only unilaterally, in only 2 of 46 specimens examined for character); dorsal procurrent caudal fin rays 6 to 8 (typically 7), ventral procurrent rays 6 to 8 (typically 7), total procurrent rays 12 to 15 (typically 14), segmented rays 13. Lacking nape cirrus. Orbital cirrus consisting of flattened central stalk with up to 7 branches on each lateral and medial margin; less than orbital diameter in females, ranging from less than to slightly greater than orbital diameter in males. Nasal cirrus short, ranging from ragged-edged flap to palmate flap with up to 16 irregular branches; lacking posterior canines; ventral margin of upper lip entire; dorsal margin of lower lip varying from entire to weakly, irregularly, and almost unnoticeably crenulate (irregularities almost entirely restricted to corners of lip). Males with well-developed, blade-like crest on head; females lack crest, but females generally at 6.8 to 8.6 cm SL with faint, ridge-like crest precursors; male crest uniformly dusky or covered with dusky spots or granular vermiculations; remainder of head either almost uniformly dusky or with fine, dusky spots on opercle. Male max. size 11.8 cm SL; female max. size, 10.3 cm SL.
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: 15 September 2009 Ref. (130435)
Threat to humans:  harmless
Country info:  Museum: reef in Culion Harbor, CAS-SU 25520 (holotype of Salarias colei). Estancia, Panay, CAS-SU 28253 (holotype of S. martini) (Ref. 9962). According to Springer and Williams (1994), "this species is known only from the type series of its two nominal synonyms, collected more than 50 years ago. Considering all the collecting activity that has occurred in the Philippines in the past 20 years, it seems amazing that this clearly shallow-dwelling, once common species has not been re-collected. We fear it may be extinct". (Ref. 48613). Also Ref. 9962. Also known from Palawan and Panay (Ref. 90102).


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