Fusigobius signipinnis Hoese & Obika, 1988
Signalfin goby
photo by Honeycutt, K.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  4.9 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 3 - 30 m
Distribution:  Western Pacific: Japan to Australia. Recently reported from Tonga (Ref. 53797).
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 1-1; Anal soft rays: 8-8. Males have a taller, more heavily pigmented first dorsal fin; characterized by translucent grey body color; red-brown iris; side of body with tiny brown spots; first two membranes of first dorsal fin with black tip and large brown blotch below; pelvic fins united only at bases; absence of pelvic frenum; rounded caudal fin; longitudinal scale series 23-25; mainly ctenoid scales except cycloid on breast, base of pectoral fin and side of nape to above rear margin of preopercle; scales absent on operculum; median predorsal scales absent; opening of gill extending to level slightly anterior to posterior edge of preopercle; depth of body 4.7-5.5 in SL (Ref. 90102).
Biology:  Lives on patches of fine sand near coral rock or rubble of lagoon reefs (Ref. 37816, 48637).
IUCN Red List Status: Least Concern (LC); Date assessed: 27 August 2020 Ref. (130435)
Threat to humans:  harmless


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