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Species: Hydrolagus alberti, Gulf Chimaera

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D1 spine free near tip
D2 with straight edge
no A

Hydrolagus alberti Bigelow & Schroeder, 1951

Gulf Chimaera

Body compressed, elongate, tapering to a filamentous tail; head very large, 21% body length; snout short, round, conical; eyes large (~40% head length), oval; nostrils large, before mouth, connected to outer corner of mouth by a deep groove covered with a flap; mouth under head; teeth are plates, 2 pairs above, 1 pair below; gill opening before pectoral, covered by fleshy operculum; 2 separate dorsal fins; 1st dorsal fin large, triangular, erect, with sharp tip and a straight rear edge, a long spine at front, that spine largely free of & slightly higher than fin; 2nd dorsal fin low, long based, its border relatively straight, height at about mid-base about same as at front of fin; anal fin absent; pectoral fins broad, triangular; pelvic fins broad, triangular; tail fin elongate, lance-like, both lobes about equal in height, with a whip-like rear filament; lateral line canals well developed, on head and body noticeably open; skin smooth, no scales; males with large, 2-3 pointed sex organs.

Uniform dark brown.

Reaches 100 cm

Depth range 223-1494 m

Benthopelagic over soft bottoms

North Carolina to Surinam

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  • Marine
  • Marine Only
  • Offshore
  • Offshore Only
Water Column Position
  • Bottom
  • Bottom + water column
  • Near Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
Egg Type
  • Benthic
  • Data
  • No pelagic larva
  • No pelagic phase
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • GC endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 100
Depth Range Min
  • 223
Depth Range Max
  • 1494