Shorefishes of the Eastern Pacific online information system

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Species: Peristedion crustosum, Encrusted armored-searobin

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keel along side head: wide, ends in blunt flange
snout plates thin, ~parallel, wide apart, 21-25% head
red; D1 - black outer 1/2
barbels: filamentous 61-70% head; others few, slender

Peristedion crustosum Garmann, 1899

Encrusted armored-searobin

Head and body flattened below and completely covered in a heavy armor of bony plates and spines; bony keel along side of face wide, serrated, ends in a rounded to right-angled flange; snout long, depressed; the pair of rostral spines projects forwards, almost parallel; nasal spine well developed; snout plates thin, parallel to slightly divergent, widely spaced, longer than pupil length, 21.1-25.8% of head length; filamentous barbell 61.5-69.4% of head length (38.2-40.2% in Galapagos specimens), with ~8 groups of barblets; chin and lip barbels slender, few; gill rakers 27-29; dorsal fin divided into 2 parts, VIII + 17;  pectoral fin with main fin (12) plus 2 free rays below; anal fin 0, 17-18; pelvic fins are wide apart, below base of pectorals, with I, 5 rays.
Body intense red; throat and abdomen white; 1st dorsal fin of large fish with upper half black.
Reaches  20 cm.
Habitat: on soft bottoms.
Depth: 100-486 m.
Costa Rica to Colombia, the Galapagos and Cocos

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Soft bottom only
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Bathydemersal
Feeding Group
  • No Data
  • Carnivore
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Pelagic larva
  • Pelagic
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Island (s)
  • TEP endemic
  • Continent
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 20
Depth Range Min
  • 100
Depth Range Max
  • 486