Cirripectes castaneus (Valenciennes, 1836)
Chestnut eyelash-blenny
Cirripectes castaneus
photo by Randall, J.E.

Family:  Blenniidae (Combtooth blennies), subfamily: Salariinae
Max. size:  9.2 cm SL (male/unsexed)
Environment:  reef-associated; brackish; marine; depth range 0 - 32 m
Distribution:  Indo-West Pacific: Red Sea to Tonga, north to southern Japan; south to Lord Howe Island; Palau, Ifaluk, and Kapingamarangi in Micronesia.
Diagnosis:  Dorsal spines (total): 11-13; Dorsal soft rays (total): 13-15; Anal spines: 2-2; Anal soft rays: 14-16; Vertebrae: 29-31. Diagnosis: Dorsal fin XII, 14, membrane attached to caudal fin, with deep notch above last spine, first spine almost same or slightly higher than second; anal fin II, 15; pectoral rays 15; pelvic fin I, 4; caudal fin procurrent rays 10-14. Vertebrae 11 + 20. Body depth at anal-fin origin 3.2-3.5 in SL. Body depth at anal-fin origin 3.2-3.7 in SL. LL, without scales and scalelike flaps; LL tubes 1-13 (usually 3-12), canal ends below 5th dorsal ray to caudal-fin base. Lower lip smooth mesially, plicate laterally. Upper lip crenulae 29-50. Gill rakers 20-32. Cephalic sensory pore system simple; 1 pore behind each nuchal flap. Cirri, nuchal 29-44, nasal 6-49, supraorbital 6-49; nuchal cirri in 4 groups, ventralmost group on each side borne on slightly expanded nuchal flap. Meristic and morphological characters consistent; color pattern geographically variable. Males: Chagos, body bars alternating light and dark brown, dorsal spine tips and anterior caudal fin rays yellow; Red Sea, head and anterior body bars narrow red on brown background; GBR, head and body bars alternating pink and brown; Fiji, body bars brown on grey or yellow background; Comoros, bars reddish brown, slightly oblique. Females: mostly with reticulated pattern of wavy brown lines and pale polygonal spots; others plain brown, particularly those from South Africa and Kenya Head with spots and lines; iris with irregular red ring around outer part of eye, narrow yellow ring around pupil, with black between the ring (Ref. 529, 90102).
Biology:  Adults occur in wave-swept algal ridge (Porolithon ridge) of outer reef flats. Usually found on rocky and coralline substrates at depths less than 10 m. Usually seen in small loose groups spread over sections of reef (Ref. 48636). 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). Have been collected as deep as 30 m in the Red Sea, 32 m at Rowley Shoals off Western Australia (Ref. 529).
IUCN Red List Status: Least Concern (LC); Date assessed: 24 March 2009 Ref. (130435)
Threat to humans:  harmless
Country info:  Museum: LACM 42490-88, 4279-19; USNM 224951, 227552, 227554, 228062, 228171, 228191-93, 228197, 228202, 228208, 228210, 229252, 228281 (Ref. 529). Also Ref. 529, 121724.


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