Obscure Goby

Plain light to dark grey or brownish grey with indistinct bars and X-shaped markings along side, and most distinct marking a blackish spot on upper caudal fin base (Ref. 43716). Longitudinal scales 28-41; TRB 8-13; predorsal scales 14-22, small, evenly sized, reaching up close behind eyes; scales on side of body ctenoid; first spine of dorsal fin longest, white and usually filamentous in both sexes (Ref. 43716). Caudal fin rounded (Ref. 43716).

Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).

Dorsal spines (total): 7; Dorsal soft rays (total): 8 - 9; Analspines: 1; Analsoft rays: 7 - 9; Vertebrae: 26

Known only from freshwater and brackish habitats, from mangrove creeks to a lily-covered lake (Ref. 43716).