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Species: Polymixia nobilis, Stout beardfish

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body depth 36-40% SL
D 34-38
gill rakers 10-13

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Polymixia nobilis Lowe, 1836

Stout beardfish

Body elongate (depth 36-40% of SL), compressed, oval in cross-section; eye large; snout rounded and prominent; mouth ~horizontal, lower jaw shorter, extends past rear of eye, with 2 extra bones above expanded main rear bone; teeth minute, in bands, on tongue as well as jaws and on center, sides and rear of roof of mouth; 7 rays (1st 3 minute, only last 4 visible) on membrane under gill cover; a pair of long barbells under lower jaws, well behind chin; 10-13 gill rakers; dorsal and anal fin with spines; 1 dorsal fin, long base IV-VI, 34-38; anal fin III-IV, 15-18; pelvics origin behind pectorals; tail fin forked, with spines on upper and lower base; scales spiny, moderately large, 31-37 with lateral line pores.

Body and head bluish to greenish silver, brown along top of body; sides silver; dark to black front tips of dorsal and anal fins and rear tips of tail fin.

Reaches 54 cm.

Bottom living on soft-bottoms.

Depth range: 70-800 m.

E and W Atlantic; Bermuda to Guyana.

Note: the population off Bermuda (and rest of the W Atlantic?) is a separate species from that in the E Atlantic.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
Habitat
  • Rocks
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • Data
Diet
  • Bony fishes
  • Octopus/squid/cuttlefish
Egg Type
  • Pelagic larva
  • Data
  • Pelagic
Global Endemism
  • Greater Caribbean non-endemic
  • Transatlantic (East+West Atlantic)
Regional Endemism
  • GC non-endemic
  • Continent
  • Also in Brazil
  • Extends South of GC
  • Continent + Island (s)
  • Island (s)
Residency
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 54
Depth Range Min
  • 70
Depth Range Max
  • 800