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Species: Bellator gymnostethus, Naked-belly searobin

All Families:   All Genera:   All Species:

snout: long plates
spine over front eye
D1: 1st spine short, red + 2 dark spots
pectoral red, dusky edge
D2 & A wide red margin
C red + yellow blotch
preopercular crest: 2 rear spines
breast scaleless

Bellator gymnostethus (Gilbert, 1892)

Naked-belly searobin

A large, squarish, bony head that has many ridges and spines; rostral plates prolonged, forming divergent lobes on each side of snout tip; preopercular crest with 2 rear spines; a spine above front of eye; narrow between eyes; mouth opens at front or slightly under snout; teeth on jaws and roof of mouth simple; two separate dorsal fins, XI + 11 first spine short, second spine the longest; anal rays 11; pectoral fins short, 23-34 percent of SL, reaching origin of anal fin, 12 rays, with 2-3 enlarged, free rays at bottom of fin;  body with rough scales; rear flap of operculum without scales; nape not scaled;  breast and belly entirely scaleless; pored lateral- line scales 48-52.

Upper head and body red, body may have faint darker bars on sides, lower parts white; 1st dorsal reddish, 1-2 dark red spots at middle of fin; 2nd dorsal and anal fins with broad red margin; pectoral fin red, outer edge with sooty cast; tail fin reddish, with yellowish blotch on lower half.

Size: reaches at least 15 cm.

Inhabits sand-rubble bottoms near reefs.

Depth: 30-200 m.

Southern Baja California and the central western and southeastern Gulf of California to Peru.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
  • Soft bottom only
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Zooplankton
  • Data
  • Bony fishes
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • East Pacific endemic
  • All species
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • TEP endemic
  • Continental TEP endemic
  • Continent
  • All species
  • 3 provinces (Cortez + Mexican + Panamic) endemic
  • Continent only
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Length Max
  • 15
Depth Range Min
  • 30
Depth Range Max
  • 200