Shorefishes of the Greater Caribbean online information system

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Species: Coralliozetus cardonae, Twinhorn Blenny

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head short, blunt
eye cirri: 1-2 simple
male: front 1/2 black + dense blue dots, withish oblique bar under eye
female: front D white, cheek - white bar, under head black spots
center top lip - notch



Coralliozetus cardonae Evermann & Marsh, 1899

Twinhorn Blenny

Elongate; head short, blunt, not spiny on top; simple cirri at nostrils; 2 unbranched cirri on each eye, rear one tiny or absent, none on nape; notch at middle of top lip; 1 row of teeth on each side of roof of mouth; dorsal fin XVII-XIX,11, a notch between spines and rays, fin higher at front in male, with a flag like flap on front of first spine; anal fin II, 18-21; pectoral fin ~13; pelvics I (internal), 2-3, inserted before pectoral base; all fin rays unbranched; no lateral line; no scales.

Male with front half of body and dorsal fin black, heavily speckled with blue dots, rear half translucent greenish, with pale brown bars; a whitish, blue-edged bar back and down from eye; front 3 spines of dorsal fin whitish orange, other fins yellowish. Female pale greenish, with a faint stripe along side; often black spots on underside of head; a white angled bar on cheek; front of dorsal fin white.

Reaches 2.5 cm.

Lives in holes or empty barnacles in rock in shallow surge zones.

Depth range: 0-4 m, usually near the waterline.

The Bahamas to the S Caribbean.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Reef only
  • Rocks
  • Barnacles & worm tubes
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Planktivore
  • Data
  • Zooplankton
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Sessile crustacea
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • GC 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
  • 2.5
Depth Range Min
  • 0
Depth Range Max
  • 4