Facultative air-breathing in the genus ; Inhabits shallow, relatively still, brackish to freshwater creek habitats .
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 7 - 9; Vertebrae: 26. Body with distinct dark oblique shoulder bar, scale margins rimmed with narrow dark line forming reticulate pattern usually overlaid by narrow dark bars and dorsal saddles; 2 dark spot at caudal base . Longitudinal scales 29-33; TRB 9-12; predorsal scales 12-19, small, reaching to above preopercular margin; scales on body mostly ctenoid; first dorsal spine white and always longest, often filamentous . Caudal fin rounded to oval .: fusiform / normal; Cross section: compressed.
Behavioural data for Drain mangrovegoby is currently being reviewed.
Freshwater; brackish; benthopelagic. Tropical known only from Northern Territory, Australia.
The following diseases are known to affect Drain mangrovegoby.
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