Ecsenius dilemma Springer, 1988
Twocoat coralblenny
Twocoat coralblenny
photo by Randall, J.E.

Family:  Blenniidae (Combtooth blennies), subfamily: Salariinae
Max. size:  3.1 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 1 - 34 m
Distribution:  Western Pacific: known only from the Philippines.
Diagnosis:  Dorsal spines (total): 12-12; Dorsal soft rays (total): 12-13; Anal spines: 2-2; Anal soft rays: 14-15; Vertebrae: 31-32. Description: Dorsal fin XII,12-13 (usually 13), with deep notched between spinous and segmented-ray portions; anal fin II,14-15 (usually 15); pectoral rays 12-14 (usually 13); pelvic I,3; caudal fin 13. Vertebrae 10 + 20-22 (usually 21). Incisors and canines look very similar, 39-44; posterior canines one on each side; posterior canines usually one on each side. Lateral line without pores, terminates below dorsal-fin spines between 9-11. Anterior nostril with cirrus on posterior rim only. Head pinstripes whitish or yellow, three, parallel, short; head pinkish to brownish and paler below the pinstripes; without markings on ventral surface and opercle margin. Body overall grey, darker dorsally, either with black narrow stripes and faint gray bands; or with two orange to brownish broad stripes interrupted by 8-9 broadly interspaced intensely dark bands below the dorsal fin spinous and segmented-rays portion (Ref. 5296, 90102). Body depth 4.5-5.5 in SL, at origin of anal-fin (Ref. 90102).
Biology:  Found in coral reefs (Ref. 90102), sand, rubble and coral bottoms (Ref. 5296). 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: 25 March 2009 Ref. (130435)
Threat to humans:  harmless
Country info:  Museum: USNM 231319 (holotype, Sombrero Is., Batangas), USNM 225053, 225052, 228919; AMS I.21918-003, I.21918-004; BPBM 26848. Also known from Caban Island, Batangas (Ref. 5296) and Cebu (Ref. 90102) at Pescador Island, and Liloan Point, Cebu Island (Ref. 5269) and Spratly Islands, South China Sea (Ref. 054476).


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