Shorefishes of the Eastern Pacific online information system

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Species: Genyatremus pacifici, Carruco grunt, Carruco sargo, Pacific grunt

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4-5 dark bars
longest D spine & 2nd A spine < 1/2 head
depression before eye

Genyatremus pacifici (Günther, 1864)

Carruco grunt, Pacific grunt, Carruco sargo

Body deep, compressed, back high; head small, blunt, a conspicuous depression before eye; rear margin of bone under eye concealed by scales; mouth small, low, ~horizontal, lips thick;  teeth in bands on jaws, outer ones larger, conical; chin  with 2 pores, with a central groove; preopercle finely serrated, but no enlarged spines; dorsal continuous, but not deeply notched, XI, 14; anal III, 9-10, 2nd  spine long and thick;  longest dorsal spine and 2nd  anal spine <½ head length; pectoral fins very short, not reaching tip of pelvic; tail forked; scales small, in oblique rows above, horizontal rows below; scales over entire body and head except front of snout, lips and chin; soft dorsal and anal without scales; lines of scales above lateral line in rows parallel to that line; lateral-line scales 45-58.

Whitish to dusky pale grey with 4-5 blackish bars on body and head (bars quickly disappear after death); soft dorsal and soft part of anal fin dusky blackish.

Size: to at least 30 cm.

Habitat: inshore waters on sandy or muddy bottoms, also enters estuaries and rivers.

Depth: 3-35 m.

Central Mexico to northern Peru.

Nota: Previously in the genus Anisotremus.

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  • Marine
  • Freshwater
  • Brackish
  • Inshore Only
  • Inshore
Water Column Position
  • Near Bottom
  • Bottom
  • Bottom + water column
  • Water column
  • Estuary
  • Sand & gravel
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Mud
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • No Data
  • Octopus/squid/cuttlefish
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
  • Mobile benthic gastropods/bivalves
Egg Type
  • No data
  • Pelagic
  • Pelagic larva
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • Continent
  • Continental TEP endemic
  • Continent only
  • All species
  • TEP endemic
  • Mexican + Panamic provinces endemic
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Length Max
  • 30
Depth Range Min
  • 3
Depth Range Max
  • 35