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Species: Quassiremus ascensionis, Blackspotted snake eel

All Families:   All Genera:   All Species:

snout: cónical, overhanging, groove underneath
D origin behind pectoral
body - 2 rows dark & red-brown ocelli; head - dense small spots
tail slightly < 1/2 TL, tip blunt, no C
jaw teeth pointed, 1 row
pectoral tiny, base narrow

Quassiremus ascensionis (Studer, 1889)

Blackspotted snake eel

Body stout, compressed at rear; tail 44-47% of TL; snout conical, overhanging, with a short groove underneath; front nostril tubular, rear nostril opens into mouth; lips without barbells; teeth pointed, in single rows on jaws and roof of mouth; gill opening a vertical crescent low on side; dorsal fin origin behind gill opening; pectoral fin minute (< eye diameter), its narrow base opposite the top ½ of the gill opening; tail tip a blunt, finless point; lateral line complete, lines of each side of head connected by 2 canals with across top of head.

Body mid-grey above, pale below; 2 rows dark centered, red-brown ringed ocelli, along top of back and along mid-flank; head pale with a dense network of small dark spots.

Reaches 71 cm.

Seagrass and sand and rubble bottoms.

Depth range: 2-12 m.

Bermuda to Brazil and the central Atlantic.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom only
  • Sand & gravel
  • Submerged vegetation
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Reef (rock/coral/oyster)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
  • Mobile benthic gastropods/bivalves
Egg Type
  • Pelagic
  • Pelagic larva
  • Data
Global Endemism
  • All species.
  • Transatlantic (East+West Atlantic)
  • Greater Caribbean non-endemic
Regional Endemism
  • Island (s) only
  • All species..
  • Island (s)
  • GC non-endemic
  • Also in Brazil
  • Extends South of GC
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Depth Range Min
  • 2
Depth Range Max
  • 12
Length Max
  • 71