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Species: Prionotus longispinosus, Bigeye Searobin

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D1: central ocellus
gill membrane under throat: rays white
pectoral: rounded, reaches 2/3 A base, dark + blue/light spots

Prionotus longispinosus Teague, 1951

Bigeye Searobin

Large head; large eye; snout moderately long, depressed at tip; no cirri over nostrils or eyes; mouth opens slightly under snout, lower jaw not projecting; dorsal rays X, 12; anal rays 10; pectoral fin with rounded end, 13-14 joined rays, reaching to 2/3 distance along base of anal fin, with 3 enlarged, free rays at bottom of fin; body scaled; membrane above opercular spine with scales; nape with scales.

Body brown above, whitish below; dorsal fin with 1 ocellated spot between spines IV and V, pale area of ocellus extends forward to 1st spine; rays under throat white; pectoral black, with transverse rows of small light blue to pale spots, a diffuse dark spot on upper part behind fin origin, lower margin blue; anal fin grey, with dark central stripe; tail fin pale grey, with dark margin.

Size: reaches 35 cm.

Habitat: mud-sand bottoms.

Depth: 9-219 m, usually 9-91 m.

The Gulf of Mexico.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Sand & gravel
  • Soft bottom only
  • Mud
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Octopus/squid/cuttlefish
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • Gulf of Mexico endemic
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 35
Depth Range Min
  • 9
Depth Range Max
  • 219