Shorefishes of the Greater Caribbean online information system

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Species: Coryphopterus glaucofraenum, Bridled Goby, Bridled Sand-goby

All Families:   All Genera:   All Species:

double-peaked triangle over opercle
body: 3 rows dark marks, bottom row = large Xs
pelvics: round disc
D2 & A 9
pectoral 18-19, base - small top spot
C base 2 dark spots

Coryphopterus glaucofraenum Gill, 1863

Bridled Goby, Bridled Sand-goby

Snout profile slightly rounded; crest on head; head pores present, usually 1 between center of eyes, 1 pair between rear nostril; papillae on cheek in horizontal rows; front nostril a short tube, rear a raised rim; mouth small, relatively horizontal; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VI + I, 9; length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 9; pectoral fin 18-19 (17-20); pelvic fins I, 5, disk complete, joined at front, with straight rear margin, frenum present; body covered with scales, scales large, rough, absent from head, 26-28 in lateral series; no lateral line.

Pallid to darkly pigmented depending on habitat; body with three rows of dark X markings, from head to tail base, middle row generally darkest; a white bridle from mouth to upper operculum; a prominent, double-pointed, triangular black spot above corner of opercle; a small dark spot on upper pectoral base, sometimes 1-3 fainter markings at lower base; tail base with 2 dark spots, sometimes a thin dark line joining them; fins clear to dusky.

Reaches: 8 cm.

Depth: 1-61 m.

Habitat: Sand around bases of coral reefs.

North Carolina to Brazil.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Sand & gravel
  • Sea anemones
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Detritivore
  • Omnivore
  • Data
  • Benthic microalgae
  • Detritus
  • Mobile benthic crustacea (shrimps/crabs)
  • Sea-stars/cucumbers/urchins
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent + Island (s)
  • Extends N + S of GC
  • Extends North of GC
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 8
Depth Range Min
  • 1
Depth Range Max
  • 61