Mugilogobius rivulus Larson, 2001
Drain mangrovegoby
photo by Wilson, D.

Family:  Gobiidae (Gobies), subfamily: Gobionellinae
Max. size:  4.5 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish
Distribution:  Oceania: known only from Northern Territory, Australia.
Diagnosis:  Dorsal spines (total): 6-7; Dorsal soft rays (total): 7-8; Anal spines: 1-1; Anal soft rays: 7-9; Vertebrae: 26-26. 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 (Ref. 43716). 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 (Ref. 43716). Caudal fin rounded to oval (Ref. 43716).
Biology:  Inhabits shallow, relatively still, brackish to freshwater creek habitats (Ref. 43716).
IUCN Red List Status: Least Concern (LC); Date assessed: 01 March 2020 Ref. (130435)
Threat to humans:  harmless


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