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Species: Bascanichthys gaira, Colombian sand-eel, Colombian Sand Eel

All Families:   All Genera:   All Species:

strongly bicolored: dark over light
LL pores not in pale spots
pectoral = minute, triangular flap with filament, base 17-33% gill opening

Bascanichthys gaira  Moreno, Acero & Grijalba-Bendeck, 2016

Colombian sand-eel

Body very elongate; head and trunk 52-56% of TL; tip of tail finless, hard, blunt; head and throat with longitudinal folds; eye small (4.1-5.5% TL); snout short, pointed, grooved on underside; front nostril tubular, rear nostril opens in top lip, without a flap; jaw teeth small, conical, in 1 row on jaws, 3 large teeth at front between top jaws in a V shaped groove under snout that are exposed when mouth is closed, vomer with 13-17 teeth; gill opening vertical, at lower side; dorsal and anal fins low; dorsal origin before gill opening; pectoral fin minute, 12.3-24.7% of gill opening length, moderately long (length 17-33% base length), triangular, ends in a filament; lateral line complete, lines of each side of head connected by 2 canals with across top of head.

Strongly bicolored, dark brown above, light brown to cream below; fins pale.

Reaches 48 cm.

Sandy bottoms.

Depth range: 5-10 m.

Eastern Colombia

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  • Marine
  • Marine Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
  • Soft bottom only
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Mobile benthic worms
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Data
  • Pelagic larva
  • Pelagic
Global Endemism
  • West Atlantic Endemic
  • All species.
  • Greater Caribbean endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • Caribbean endemic
  • All species..
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 48
Depth Range Min
  • 5
Depth Range Max
  • 10