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Species: Serranus flaviventris, Twinspot Bass

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head & body: brown + small, dense dark spots
rear belly: prominent white bar
C base: 2 indistinct oceli

Serranus flaviventris (Cuvier, 1829)

Twinspot Bass

Body elongate, moderately compressed; snout shorter than eye; rear of top jaw exposed when mouth closed, without accessory bone above it; 3 opercular spines well developed, middle spine straight; preopercle regularly serrated, no spur with enlarged spines; gill rakers 15-18; dorsal fin X,12-13; anal fin III, 6-8; pelvics inserted before pectoral base; pectoral fin 16-17; tail with bluntly staight edge, 13-15 branched rays; scales very rough, relatively large, 6-7 rows of scales on cheek; 39-44 pored lateral line scales; top of head without scales.

Head and body pale brown, with a dense scattering of small dark brown spots; rear of belly with a bright white bar; base of tail fin with 2 prominent black & clear ocelli; spiny dorsal fin with a large black blotch at the front, a small one behind, 2 smaller blotches on the soft dorsal.

Reaches 7.5 cm.

Reef associated; rocky areas with sand & rubble; seagrasses; sand and sand/mud bottoms.

Depth range: 2-402 m.

The SE Gulf of Mexico and the Caribbean to Brazil.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Submerged vegetation
  • Bivalves & sea cucumbers
  • Corals
  • Estuary
  • Mud
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent + Island (s)
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 7.5
Depth Range Min
  • 2
Depth Range Max
  • 402