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; 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:   (Ref. 96402)
 Threat to humans:  harmless
 Country info:   

 Entered by: Garilao, Cristina V. - 04.03.98
 Modified by: Reyes, Rodolfo B. - 27.02.14

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