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Species: Peristedion unicuspis, Enigma Armored Searobin

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head medium wide
face rim: undulating, spiny, end - wide triangular wing
barbells; lip - v long filament + 4; chin 8-9
top rear back spines - 1 point
pectoral: 1st free ray v long
rostral plates: medium length, < snout
pectoral center - black spot
inside mouth v dark

Peristedion unicuspis Miller, 1967

Enigma Armored Searobin

Head and body flattened below, body completely covered in a heavy armor of 4 rows of bony spiny scales, those at rear of series along center of top of back with 1 back-pointing spine; body not rectangular, dimensions at anus < dimensions at head; head moderately broad; snout long, depressed; bony rim around sides of head with spines and undulations, ends in broad triangular wing; no spine at nostril, no spine at base of snout plates; rostral plates narrow, moderately long, < snout, directed to front; lower jaw with 1 serrated ridge; barbels: filamentous barbell very long, reaches to end of 1st body scute, with filaments in pairs on 1 side, singletons on the other; 4 thin lower lip barbells in 2 clusters; 8-9 chin barbels in 5 clusters, barbell tips pointed; gill rakers 5+21; dorsal fin divided into separate spiny and soft parts, VIII + 19-20, both parts low; anal fin without spines, 19; pectoral fin 12 + 2 free rays, 1st free ray longer than main fin; pelvic fins wide apart, below base of pectorals, I,5 rays; front edge of first spiny plate under belly behind front of bony pelvic girdle.

Head and body pale grey; inside of rear of mouth and lining of body cavity very dark; 1st dorsal with outer half of front 5 spines black; 2nd dorsal with a few scattered dark spots, no dark margin; center of pectoral fin with a small black spot.

Reaches 16 cm.

Found on sand/mud bottoms.

Depth range: 356-530 m.

The Bahamas.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Mud
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • Data
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
Regional Endemism
  • Bahamas endemic
  • GC endemic
  • Island (s)
  • Island (s) only
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Data deficient
  • Listed
  • Not listed
Length Max
  • 16
Depth Range Min
  • 356
Depth Range Max
  • 530