Arcygobius baliurus (Valenciennes, 1837)
Isthmus goby
photo by Randall, J.E.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  10.16 cm SL (male/unsexed)
Environment:  demersal; brackish; marine; depth range 3 - 15 m
Distribution:  Indo-West Pacific.
Diagnosis:  Dorsal spines (total): 6-7; Dorsal soft rays (total): 9-10; Anal spines: 1-1; Anal soft rays: 8-9. Characterized by semi-translucent grey body with brown and white spotting; lower side of body with row of double blackish spots; pelvic fins united and frenum present; rounded caudal fin, about equal to head length; longitudinal scale series 22-26; ctenoid body scales and on nape; predorsal scales 8-11; cheek and opercle without scales; depth of body 5.5-6.1 in SL (Ref. 90102).
Biology:  Solitary or in small groups. Inhabits sand-rubble bottoms in 3-15 m (Ref. 90102).
IUCN Red List Status: Data deficient (DD); Date assessed: 11 March 2015 Ref. (130435)
Threat to humans:  harmless


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