Risor ruber (Rosén, 1911)
Tusked goby
photo by Macieira, R.M.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  2.5 cm TL (male/unsexed)
Environment:  reef-associated; marine
Distribution:  Western Atlantic: southern Florida, USA and the Bahamas to northeastern Brazil (Ref. 39606).
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 11-12; Anal spines: 1-1; Anal soft rays: 9-10. Distinguished by the following characteristics: first dorsal fin spines VII; completely united pelvic fins; scales only on posterior section of the trunk; four modified basicaudal scales at the base of the caudal fin; light to dark brown body color with faint internal bars visible on lighter specimens; 2-4 enlarged re-curved canines in each jaw that project out of the mouth, point out and up in the upper jaw, down and back on the lower jaw (Ref. 92840).
Biology:  Found in association with large barrel sponges, generally along outside hiding in crevices, also sometimes within the sponge tubules (Ref. 92840).
IUCN Red List Status: Least Concern (LC); Date assessed: 01 March 2010 Ref. (130435)
Threat to humans:  harmless


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