Bryaninops nexus Larson, 1987
Upside-down goby
photo by Allen, G.R.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  2.3 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 3 - 50 m
Distribution:  Western Pacific: Japan and Australia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 7-8; Anal spines: 1-1; Anal soft rays: 7-8. Characterized by having semi-transparent body with dusky stripe on side of snout; presence of broad reddish brown stripe from rear eye to dorsal surface of abdomen and along ventral body to caudal fin base; pectoral rays unbranched and not thickened; longitudinal scale series 33-41; shallow cup, pelvic disc; opening of gill usually reaching to below middle or rear half of eye (Ref. 90102).
Biology:  Occurs on lagoon reefs and hovers upside-down among thickets of the staghorn coral Acropora formosa (Ref. 37816, 48637). Often seen resting on underside of coral branches and makes short forays into water column to feed on planktons (Ref 90102).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Torres, Armi G. - 25.04.00
Modified by: Valdestamon, Roxanne Rei - 04.04.13

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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