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Species: Mycteroperca prionura, Sawtail grouper

All Families:   All Genera:   All Species:

grey + dark oval blotches and spots
D: 3rd spine longest
C: edge saw-like

Mycteroperca prionura Rosenblatt & Zahuranec, 1967

Sawtail Grouper

Body elongate, robust, compressed, depth at dorsal origin not greater than at anal origin; body deepest at anal fin origin; snout much longer than eye; lower jaw projecting; rear of top jaw exposed when mouth closed, without accessory bone above it; teeth depressible; canines at front of jaws; preopercle corner angular, with serrated lobe; gill rakers 34-38; dorsal rays XI (rarely X),16-18, 3rd spine longest; anal rays III, 10-12 (usually 11); pectoral rays 15-16 (usually16); tail fin with saw-like rear edge; scales in longitudinal series above lateral line 90-110.

Juveniles pale grey or whitish with combination of small brown spots and larger oval-shaped brown blotches; adults similar but small spots are much more numerous and larger blotches are generally faint.

Size: reaches 100 cm.

Inhabits rocky reefs.

Depth: 10-90 m.

The Gulf of California; Alijos Rocks.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Reef (rock/coral/oyster)
  • Rocks
  • Reef only
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Bony fishes
  • Data
Egg Type
  • Pelagic larva
  • Pelagic
  • No data
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • Continent
  • Continental TEP endemic
  • TEP endemic
  • All species
  • Cortez + Mexican provinces endemic
  • Continent only
  • Resident
Climate Zone
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Listed
  • Near threatened
  • Not listed
Length Max
  • 100
Depth Range Min
  • 10
Depth Range Max
  • 90