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Acentrogobius janthinopterus (Bleeker, 1853) Robust mangrove goby |
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photo by
Allen, G.R. |
Family: | Gobiidae (Gobies), subfamily: Gobiinae | |||
Max. size: | 12.5 cm TL (male/unsexed) | |||
Environment: | reef-associated; freshwater; brackish; marine, amphidromous | |||
Distribution: | Indo-Pacific: from the Eastern Indian Ocean: Indonesia (Ref. 7050) and western Australia (Ref. 49596) to 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: | Least Concern (LC); Date assessed: 02 March 2020 Ref. (130435) | |||
Threat to humans: | harmless |