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Species: Emblemariopsis randalli, Randall’s blenny

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snout pointed, 2 crests
cirri: nasal short flap, eye none
D front not v elevated, lower 1/2 black, outer edge red + white stripe
eye pale + oblique dark cross bar
anus in large black patch
pectoral 14

Emblemariopsis randalli Cervigón, 1965

Randall’s blenny

Body elongate and compressed; head short and blunt, without spines; snout a little pointed, not depressed, upper profile straight, rear part of nasal bones with a crest; nape profile slightly convex; nasal cirrus a short flap, no cirrus over eye; mouth oblique, ends under rear edge of eye; jaws with an outer row of small pointed teeth, a band of tiny sharp teeth at the front of both jaws behind the outer row; 1 row of 5-6 large canine teeth on each side of roof of mouth; front of roof of mouth with 10-12 small teeth; dorsal fin origin nearer eye than edge of operculum, XXI, 12-13, front of fin not greatly elevated, spines increasing in size from front to back; anal fin II, 20-22; last ray of dorsal and anal fins joined to tail base by a membrane; pectoral fin 14; pelvics I (internal), 3, inserted before pectoral base, much shorter than pectorals; tail fin rounded; all fin rays unbranched; no lateral line; no scales.

Female: transparent yellowish, finely speckled with black; a series of small black spots (sometimes ringed with pink or orange) along base of dorsal fin; eye pale, with an oblique dark cross bar: an obvious black blotch rings the anus and may extend forwards along the belly; front of dorsal fin tricolored, lower half black, a white stripe above that, outer part orange-red, rest of fin transparent or pinkish; front of anal fin with a wide black stripe along its outer part; tail and pectoral fins transparent. Male: like female, but with head and front of body dark grey-brown, general body color darker than in females, brighter tricolors at front of dorsal fin; rest of spiny dorsal fin and anal fin dark grey-brown.

Reaches 3.4 cm.

Lives on rocky and coral reefs.

Depth range: 5-15 m.

SE Caribbean.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Corals
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef only
  • Rocks
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Planktivore
  • Data
  • Mobile benthic worms
  • Data
  • Zooplankton
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Benthic
  • Pelagic larva
  • Data
Global Endemism
  • All species.
  • West Atlantic Endemic
  • Greater Caribbean endemic
Regional Endemism
  • GC endemic
  • Continent
  • All species..
  • Caribbean endemic
  • Continent only
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
IUCN Red List
  • Listed
  • Data deficient
  • Not listed
Length Max
  • 3.4
Depth Range Min
  • 5
Depth Range Max
  • 15