Shorefishes of the Eastern Pacific online information system

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Species: Anisotremus caesius, Long-fin grunt, Silver-grey grunt

All Families:   All Genera:   All Species:

front yellow + dark bar behind opercle
D 15-16
longest D spine & 2nd A spine < 1/2 head
pectoral > head

Anisotremus caesius (Jordan & Gilbert, 1882)

Silvergray Grunt, Longfin Grunt

Body deep, compressed, back high; head short, blunt; mouth small, low, ~ horizontal, lips fleshy; inside mouth not red; teeth in bands on jaws, outer ones larger, conical, none on center roof of mouth; a pair of conspicuous pores plus a central groove under the chin; preopercle finely serrated; dorsal continuous but deeply notched, 4th spine longest, XII, 15-16; anal III, 9-10, 2nd spine long and thick; longest dorsal spine and 2nd anal spine < ½ head length; pectoral fins relatively long, reaching to or beyond anal fin origin; tail forked; scales moderate to large, rough, over entire body and head except front of snout, lips and chin, on membranes between dorsal and anal soft rays; lines of scales above lateral line in rows parallel to lateral line; lateral-line scales 50-54.

Most of head and body golden or yellowish becoming white on lower sides; a broad blackish bar immediately behind head, darkest in juveniles; fins yellowish; tail fin of large adults with a dark blotch at its base,

Size: grows to at least 30 cm.

Occurs on rocky reefs; sometimes seen with Anisotremus taeniatus, but usually not as common as that species.

Depth: 3-25 m.

Mexico (Mazatlan) to Peru, and Cocos.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Near Bottom
  • Bottom
  • Bottom + water column
  • Reef associated (reef + edges-water column & soft bottom)
  • Water column
  • Rocks
  • Reef (rock/coral/oyster)
  • Reef only
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • No Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Pelagic larva
  • No data
  • Pelagic
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
  • All species
Regional Endemism
  • Continent
  • All species
  • Island (s)
  • TEP endemic
  • Continent + Island (s)
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • South Temperate (Peruvian Province )
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Depth Range Max
  • 25
Depth Range Min
  • 3
Length Max
  • 30