Shorefishes of the Greater Caribbean online information system

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Species: Mycteroperca venenosa, Yellowfin grouper

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head & body: reddish spots + dark oval blotches in pale mesh
pectoral: outer 1/3 abruptly yellow
D & A ends round

Mycteroperca venenosa (Linnaeus, 1758)

Yellowfin grouper

Body elongate, robust, compressed, depth at dorsal origin not greater than at anal origin; snout much longer than eye; in adult rear nostril 1-2X times size of front nostril; lower jaw projecting; rear of top jaw exposed when mouth closed, without accessory bone above it; teeth depressible; canines at front of jaws; preopercle serrated at rounded lower corner, without or with a slight notch above serrated corner; gill rakers, including rudiments 24-27, 17-18 below; dorsal fin with XI spines, indented between spines, 15-16 rays, rear edge rounded; anal fin with III spines, 11-12 rays, rear edge rounded; tail straight in juvenile, slightly concave in adult; scales on side of body rough in juvenile, smooth in adult and with numerous small auxiliary scales; 72-81 scales on lateral line.

Adult: head and body densely covered with red-brown to dark brown spots, a network of pale lines outlines irregular elongate dark (brown to reddish) blotches on upper body, and wavy lines on flank; pectoral with base with irregular dark spots, outer 1/3 abruptly yellow; outer parts of soft dorsal, soft anal and tail fins dark.

Reaches 100 cm.

Adults on reefs and sometimes on mud bottoms; juveniles in seagrass beds.

Depth range: 2-272 m.

Bermuda to Brazil.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Reef and soft bottom
  • Mud
  • Submerged vegetation
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Carnivore
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Octopus/squid/cuttlefish
  • Bony fishes
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
  • All species.
Regional Endemism
  • Extends South of GC
  • Continent
  • Continent + Island (s)
  • Island (s)
  • All species..
  • GC non-endemic
  • Also in Brazil
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
  • Equatorial (0-10N, Costa Rica / Venezuela)
IUCN Red List
  • Listed
  • Near threatened
  • Not listed
Length Max
  • 100
Depth Range Min
  • 2
Depth Range Max
  • 272