Tigrigobius janssi (Bussing, 1981)
Spotback goby
photo by Allen, G.R.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  3 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 10 - 25 m
Distribution:  Eastern Central Pacific: Costa Rica , Panama and Mexico.
Diagnosis:  Dorsal spines (total): 6-7; Dorsal soft rays (total): 9-9; Anal spines: 1-1; Anal soft rays: 8-8. This species is distinguished by the following characters: fewer second dorsal and anal-fin rays than other species; a spotted head and body; distinctive head shape, when viewed dorsally, it is narrow and compressed anterior to the eyes, broadening posteriorly due to the thick cheek muscles; males typically with a large mouth extending beyond the end of the eye (Ref. 87125).
Biology:  Occurs in reefs and rock outcrops surrounded by sand (Ref. 11482). Minimum depth from Ref. 58018.
IUCN Red List Status: Least Concern (LC); Date assessed: 22 May 2007 Ref. (130435)
Threat to humans:  harmless


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