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Species: Emblemaria biocellata, Twospot Sailfin Blenny

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eye cirrus: not barred, in male 2X eye
D XXII; male: spine V longest, spine I - no flaps
female: D spines IV-VI 2 outer ocelli

Emblemaria biocellata Stephens, 1970

Twospot Sailfin Blenny

Body elongate; head short and blunt, not swollen behind eyes, without spines; 2 smooth longitudinal ridges on snout, no bony ridges between eyes; 1 unbranched cirrus (its length about 2X eye size in male, 1/2 eye size in female) over eye, nasal cirrus simple or with two points; 1 row of 14-16 teeth on each front-side of roof of mouth; dorsal fin XXII, 14-15, fin greatly elevated and sail-like at front in male, 1st spine relatively short, spine V longest, no flap-like flag on base of 1st spine; anal fin II, 22; pectoral 13; pelvics I (internal), inserted before pectoral base, longer than pectoral, with 3 obvious rays (3rd ray >1/4 length of longest ray); all fin rays unbranched; no lateral line; no scales.

Preserved fish: Male- dark brown; upper body with 9 dark blotches, another row of 8 along midline, first 2 in latter series reaching almost to lower body profile; eye cirrus not barred; spiny dorsal black, soft part pale; an oblique bar back and down to throat from eye. Female- paler brown than male; upper body with 9 dark blotches, another row of 8 along midline, each of the latter with 3 ring-like marks above it; head with round dark spots, best developed between rear of mouth and front of dorsal fin; dorsal fin with oblique dark bars at front and 2 dark ocelli between spines IV-VI, tail fin with 5 bars; anal fin with 1 stripe along mid fin, stripe broader at front.

Reaches 4.8 cm.

Lives in sponges in areas rich in sponges.

Depth range: 60-70 m.

S Caribbean to Suriname.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Barnacles & worm tubes
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Planktivore
  • Data
  • Zooplankton
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • Extends South of GC
  • GC non-endemic
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 4.8
Depth Range Min
  • 60
Depth Range Max
  • 70