Elacatinus horsti

Common Name

Yellowline Goby

Year Described

Metzelaar, 1922


Dorsal Fin: VII, 12
Anal Fin: 11-12
Pectoral Fin: 18-19
Caudal Fin:
Gill Rakers:
Vertebrae: 28

Mouth subterminal. Body scaleless. Pelvic fins fused to form a sucking disk.


Body stripe bright yellow and narrow; tapering off on caudal fin. Lateral stripe black; continuing on caudal fin. Snout dusky yellow without a spot or stripe. Back black to dark gray. Belly pale. Flanks with scattered melanophores. Fins transparent and speckled with melanophores.


Maximum size to 43.5mm SL.


Coral reefs from 7-25m. Inhabits sponges and does not engage in cleaning behavior.


Caribbean Sea: known from Florida, the Greater Antilles, Lesser Antilles, Curacao, and Panama.


Böhlke, J. E. and C. R. Robins. 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 v. 120: 45-174.

Other Notes

Similar to Elacatinus xanthiprora, except lacks a spot on snout.