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Species: Pseudogramma gregoryi, Reef Bass

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forehead convex
red & brown checkerboard
operculum black blotch
upper edge operculum - mostly bound to body
spines - preopercle 1, operculum 0

Pseudogramma gregoryi (Breder, 1927)

Reef Bass

Body elongate, compressed; head short, compressed, forehead convex; long, slender triangular skin flap above eyer; rear of top jaw exposed when mouth closed, without accessory bone above it; small simple teeth in bands on jaws and center (V shaped) and sides of roof of mouth, with 1-2 pairs of small canines at front of top jaw; gill opening restricted above, with most of top of operculum bound to body by skin; preopercle with single large spine at upper corner; operculum without visible spines; dorsal fin VII, 18-19; anal fin III, 14-16; tail rounded; lateral line interrupted below posterior part of soft dorsal fin, reappearing lower down on side; scales small, rough; midlateral scales 42-46, lateral line scales 24-30.

Pale brown head and anterior body, a large blackish blotch on the upper corner of the operculum; body red brown, with dark + pale mottling in a network pattern; dorsal, tail and anal fins red brown; juvenile with a vertical row of black and white spots on tail fin base.

Size: attains 7.5 cm.

Habitat: a secretive dweller of crevices on reefs.

Depth: 1-85 m.

Bermuda to Brazil and Ascension Is

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Corals
  • 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
  • Transatlantic (East+West Atlantic)
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Extends South of GC
  • Continent
  • Continent + Island (s)
  • 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
  • 1
Depth Range Max
  • 85