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Species: Starksia robertsoni, Robertson’s Blenny

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body uniform red
lips - no bars/spots
male: opercle - large dark blotch, lower jaw - dark spots

Starksia robertsoni Baldwin, Victor & Castillo, 2011

Robertson’s Blenny

Body elongate, compressed; bluntly pointed head; eye, nostril and nape cirri unbranched; dorsal fin XX (XIX-XX), 7, a notch between spines and rays; 1st anal spine of male long, free from rest of fin, modified as sexual organ; no ridge or fold along anal fin base; anal fin II, 15 (15-16); pectorals 13 (13-14); pelvic fins I (internal), 2, inserted before pectoral base; all fin rays unbranched; lateral line continuous, front section arched, rear section straight; belly and pectoral fin base completely scaled; smooth scales on rear of body.

Body usually pale red-brown, occasionally with indistinct narrow pale bars; no dark marks on lips of either sex, but dark marks on lower jaws; preoperculum of male with a dark blotch; preserved male with 1-3 small darks spots or bars on lower jaw; body scales each with a short dark bar; a small dark spot on body edge under end of dorsal and anal fins; a row of small dark spots along the dorsal and anal fin membranes, another row in from the outer edge of the anal fin.

Reaches 3.5 cm.

Lives in live coral areas, usually on dropoffs.

Depth range: 1-27 m.

The SW Caribbean.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Reef only
  • Rocks
  • Corals
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Data
  • Live birth
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Caribbean endemic
  • Continent
  • Continent + Island (s)
  • Continental primarily
  • GC endemic
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 3.5
Depth Range Min
  • 1
Depth Range Max
  • 27