Tigrigobius gemmatus

Common Name

Frecklefin Goby

Year Described

Ginsburg, 1939


Dorsal Fin: VII, 11-12 (usually 12)
Anal Fin: 10-11 (usually 10)
Pectoral Fin: 14-17
Caudal Fin: 17 (segmented)
Vertebrae: 11 precaudal, 17 caudal; 27 total

Body elongate with a blunt snout. Two preopercular pores. A small patch of scales on caudal peduncle. Four modified basicaudal scales. Last 2 dorsal spines separated more than the anterior five. Anterior two spine may be elongate in mature males. Pelvic fin forms a fused disk.


Body dark brown to gray, with 8-9 dark brown to black body bands behind opercle. The bands fully encircle the body but often break into "Y's" dorsally. The head is dark with numerous light spots on upper head, cheek, eyes, and mouth area. Light spots often continue down the dorsal midline on fin base coinciding with light interspaces. Fins dark with dense melanophores on fin membranes but elements pale.


Maximum size to 25mm SL.


Found in shallow coral reef habitats associated with pits and crevices in limestone walls and canyons.


Caribbean Sea: insular from the Bahamas to Venezuela.


Böhlke, J. E., & Robins, C. R. 1968. Western Atlantic seven-spined gobies, with descriptions of ten new species and a new genus, and comments on Pacific relatives. Proceedings of the Academy of Natural Sciences of Philadelphia, 120, 45-174.