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Species: Acyrtops amplicirrus, Flarenostril clingfish

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nostril flap large
eye small

Acyrtops amplicirrus Briggs, 1955

Flarenostril clingfish

Body fairly short; head relatively large and wide; eye relatively small (53-63% of space between eyes); skin flap from nostril large, length =/> distance between front and rear nostrils; top lip narrow, about the same width at front as at sides; teeth at front of top jaw sharp pointed, compressed, with a patch of small, conical teeth behind them, lower incisors serrated; a few small fleshy lobes under lower jaw, but nowhere else on head; nostrils well separated, tubular; 6-7 broad gill rakers on 2nd arch; sucker disc relatively small (<25% of SL), with short papillae at front and rear and a small patch in center; pectoral fin 22 (21-22), lowest 5-7 rays distinctly reduced in size, a small fleshy pad on lower pectoral base; median fins short; dorsal fin 5-6; anal fin 5-7, like dorsal fin and under it; tail 8; no scales; lateral line present as pores on head only.

Color: bright green to brownish, with white spots and lines; dark lines radiate from eye.

Reaches 1.9 cm.

Lives in Thalassia seagrass beds.

Depth range: 1-3 m.

The E Caribbean.

Note: the taxonomic relationship between A. amplicirrus and A. beryllinus is confused and their distributions uncertain.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Submerged vegetation
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef (rock/coral/oyster)
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Data
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
Egg Type
  • Pelagic larva
  • Data
  • Benthic
Global Endemism
  • West Atlantic Endemic
  • All species
  • Greater Caribbean endemic
Regional Endemism
  • GC endemic
  • Caribbean endemic
  • Continent
  • Island (s)
  • All species
  • Continent + Island (s)
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Length Max
  • 1.9
Depth Range Min
  • 1
Depth Range Max
  • 3