Mugilogobius filifer Larson, 2001
Threadfin mangrovegoby

Family:  Gobiidae (Gobies), subfamily: Gobionellinae
Max. size:  3.9 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish
Distribution:  Oceania: northern Australia and eastern Papua New Guinea.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 7-7; Anal spines: 1-1; Anal soft rays: 7-7; Vertebrae: 26-26. Light brown to grey body with 7 - 9 short oblique dark blotches, bars or chevrons on sides, bars usually broken up into off-set pairs of blotches, anteriormost body marking a dark oblique shoulder bar, head with radiate or reticulate pattern of brown lines, broad brown band crossing branchiostegal membranes on underside of head (Ref. 43716). Second dorsal and anal rays always I,7; longitudinal scales 29-40; TRB 9-13; predorsal scales 13-21, small, reaching close up behind eyes, anteriormost scale somewhat larger than rest; scales on body mostly ctenoid; first spine of dorsal fin usually longest, filamentous (usually white and conspicuous) in adult males (Ref. 43716). Caudal fin rounded (Ref. 43716).
Biology:  Inhabits mangrove creeks and estuaries, sometimes well into freshwater influence (Ref. 43716).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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