Bathygobius cocosensis (Bleeker 1854)

Characterized by mottled brown overall color, with five alternating irregular whitish and brown blotches or saddles dorsally on body; lower half of side with 5-7 rectangular brown blotches; white spots and blotches on cheek and operculum; upper 4-5 pectoral rays branched to base, tips membrane-free; rounded caudal fin; longitudinal scale series 37-38; predorsal scales 10-12, nearly reaching to above rear margin of preopercle; scales absent on cheek and operculum; ctenoid body scales, becoming cycloid on abdomen, breast and nape; depressed head, width greater than depth; depth of body 5.0 in SL (Ref. 90102).

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

Lives among rubble, in sand pockets, or on reef rock and is abundant on silty intertidal reef flats (Ref. 9360, 58302). Benthic (Ref. 58302). Gut analysis composed of polychaetes, isopods, amphipods, and brachyurans (Ref. 9360, 48637).

aquarium: commercial