Shorefishes of the Eastern Pacific online information system

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Species: Mycteroperca jordani, Gulf grouper

All Families:   All Genera:   All Species:

brown + oblong dark blotches, lines radiate from eye
fins - outer 1/3 dark, thin white margins
D: 4th & 5th spines longest
C edge regular
gill rakers 21-26
pectoral 16-18

Mycteroperca jordani (Jenkins & Evermann, 1889)

Gulf 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 finely serrated, rounded, without a distinct notch or lobe; gill rakers 21-26; dorsal rays XI,15-17, 4th and 5th spines longest; anal rays III,10-11; pectoral rays 16-18; tail fin margin straight to slightly concave, without projecting fin rays; scales in longitudinal series above lateral line 90-120.

Adults overall greyish brown or with large, oblong dusky brown blotches on upper body and diffuse dark streaks radiating from eye; median fins with dark outer 1/3 to fin & narrow white margins; juveniles grey or grey brown with large, oblong dusky brown blotches on upper body and diffuse dark streaks radiating from eye.

Size: grows to 198 cm and 91 Kg.

Inhabits rocky reefs, usually below 30 m in summer, but in shallow depths during the remainder of the year.

Depth: 2-100 m.

Southern California through the Gulf of California and the Revillagigedos.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Reef only
  • Reef (rock/coral/oyster)
  • Rocks
  • Reef associated (reef + edges-water column & soft bottom)
  • Submerged vegetation
FishBase Habitat
  • Reef Associated
Feeding Group
  • No Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Sharks/rays
  • Data
  • Bony fishes
Egg Type
  • Pelagic larva
  • Pelagic
  • No data
Global Endemism
  • East Pacific endemic
  • TEP non-endemic
  • All species
Regional Endemism
  • Continent + Island (s)
  • Tropical Eastern Pacific (TEP) non-endemic
  • Island (s)
  • Temperate Eastern Pacific, primarily
  • California province, primarily
  • Continent
  • All species
  • 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
  • Endangered
  • Listed
  • Not listed
Length Max
  • 198
Depth Range Min
  • 2
Depth Range Max
  • 100