Acentrogobius janthinopterus (Bleeker, 1853)
Robust mangrove goby
Acentrogobius janthinopterus
photo by Allen, G.R.

 Family:  Gobiidae (Gobies), subfamily: Gobiinae
 Max. size:  12.5 cm TL (male/unsexed)
 Environment:  reef-associated, amphidromous
 Distribution:  Eastern Indian Ocean: Indonesia (Ref. 7050) and western Australia (Ref. 49596). Western Pacific: Japan, Philippines and Indonesia.
 Diagnosis:  Dorsal spines (total): 6-7; Dorsal soft rays (total): 10-10; Anal spines: 1-1; Anal soft rays: 8-8. Characterized by pale greyish to light brown body color with brown mottling on back; midside with horizontal row of five brown blotches or clusters of smaller spots; caudal fin with scattered iridescent green flecks and submarginal dark band; first dorsal fin spines elongate and filamentous in male; rounded caudal fin, equal or slightly longer than head; longitudinal scale series 32; predorsal scales behind eyes; fully scaled opercle; upper half of cheek scaled; depth of body 3.5-3.8 in SL (Ref. 90102).
 Biology:  Inhabits mud bottoms of estuaries, marine lakes and occasionally in the vicinity of reefs (Ref. 90102). Common in marine lakes (Ref. 37816).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Garilao, Cristina V. - 31.05.96
 Modified by: Valdestamon, Roxanne Rei - 19.04.13

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