Forsterygion gymnotum Scott, 1977
Tasmanian robust triplefin
photo by Clements, K.

Family:  Tripterygiidae (Triplefin blennies), subfamily: Tripterygiinae
Max. size:  7.6 cm SL (male/unsexed)
Environment:  demersal; marine; depth range 0 - 7 m
Distribution:  Southwest Pacific: southeastern Tasmania, Australia and New Zealand.
Diagnosis:  Dorsal spines (total): 25-30; Dorsal soft rays (total): 14-16; Anal spines: 2-2; Anal soft rays: 25-27; Vertebrae: 44-46. Snout profile steep, line drawn through tip of premaxilla across ventral margin of orbit touches or passes anterodorsal to dorsal extremity of preoperculum. Transverse groove in front of first dorsal fin containing cephalic sensory pore. Scales absent in front of first dorsal fin first spine, naked immediately adjacent to first dorsal, but many small ctenoid scales adjacent to post-temporal. First lateral line scale with one group of ctenii at upper posterior edge, second scale onward, with two groups of ctenii at upper and middle posterior edges. Dorsal fin formula V-0N-0-1-0-1 (Ref. 84085).
Biology:  Adults occur in rocky shores and occasionally in exposed rocky pools (Ref. 13227). Also common on wharf piles among encrusting invertebrates. Depth to at least 7 m (Ref. 84085).
IUCN Red List Status: Least Concern (LC); Date assessed: 06 May 2010 Ref. (124695)
Threat to humans:  harmless
Country info:   

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