Coryphopterus glaucofraenum

Common Name

Bridled Goby

Year Described

Gill, 1863


Dorsal Fin: VI; I, 9
Anal Fin: I, 9
Pectoral Fin: 17-20 (18-19)
Pelvic Fin: I, 5
Caudal Fin: 17 segmented rays
Lateral Line Scales: 26-28
Vertebrae: 9+17=26

Body elongate. Snout profile rounded. Eyes large and placed dorsally. A fleshy ridge present on nape from between eyes to dorsal fin origin. Anterior nostril tubular. Posterior nostril not tubular. Mouth small. Tongue truncated. No teeth on vomer or palatine. Teeth in jaws present in several irregular rows. Gill membranes joined to isthmus. Pectoral, soft dorsal, and anal fins with all rays branched and bound by membranes (first element simple). Second dorsal base longer than caudal peduncle length. Ventral fins fused into complete disk with front membrane present and rays branched. Frenum present. Body covered in ctenoid scales, becoming cycloid on chest. Head and nape naked. Head pores present (one between eyes and one pair between rear nostrils). No lateral line.


Body translucent gray to brown with viscera and spinal column showing as opaque white. Can pale or darken depending on substrate. Body with two dominant dark brown to olive body stripes with brown "X" markings evenly spaced over each stripe. These markings formed by pigmented scale margins. Diffuse brown spots over dorsal midline and fleshy ridge on nape. Body and head with numerous pearly white spots. Head with three brown lines: one through eye and darkening into a distinct dark blotch over opercle, another on cheek with a pearly line underneath it ("bridle"), and another on lower cheek that is often broken up. Base of caudal fin with a paired black spot. No dark spots on pectoral fin base. Dorsal fins and caudal fin with faint brown lines and pearly interspaces. Anal and pectoral fins dusky to clear. Eye white or yellowish with dark brown markings.


Maximum size to 80mm SL.


Sandy areas on shallow reefs (1-61m).


North Carolina to S. Brazil, including the Caribbean Sea. Also Bermuda.


Baldwin, C.C., Weigt, L.A., Smith, D.G., & J.H. Mounts. 2009. Reconciling genetic lineages with species in western Atlantic Coryphopterus (Teleostei: Gobiidae). Smithsonian Contributions to the Marine Sciences, 38: 111-138.

Baldwin C.C. & D.R. Robertson. 2015. A new, mesophotic Coryphopterus goby (Teleostei, Gobiidae) from the southern Caribbean, with comments on relationships and depth distributions within the genus. ZooKeys 513: 123-142.

Böhlke, J.E. & C.R. Robins. 1960. A revision of the gobioid fish genus Coryphopterus. Proceedings of the Academy of Natural Sciences of Philadelphia, 112, 103-128.

Other Notes

Coryphopterus glaucofraenum, C. venezuelae, and C. tortugae form a clade of closely related species (bridled gobies).