Shorefishes of the Eastern Pacific online information system

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Species: Orthopristis chalceus, Humpback grunt

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body deep
body - oblique orange lines
LL 55-60
9 scale rows - LL to D origin
preopercle finely serrated
pectoral long, curved
A: 10-11; 2nd spine > 3rd

Orthopristis chalceus (Günther, 1864)

Humpback grunt

Body relatively deep (depth 2.2-2.4 in SL), strongly compressed; mouth short, ends before eye, with thin lips; chin with 2 front pores and 2 rear pores in central hole, plus a longitudinal groove; preopercle finely serrated, lower serrations do not point forwards with vertical margin straight; lower gill rakers 12-14; dorsal fin XII (rarely XIII), 14-15, without notch between spines and rays; anal fin with long base, III, 10-11, 2nd  spine longer than 3rd; pectoral long, curved, pointed; tail forked; body scales without small accessory scales; 9-10 scale rows between lateral line and dorsal origin; soft dorsal and anal scaleless; 55-60 lateral line scales.

Silvery grey with oblique copper to orange bands corresponding with scale rows on upper half of side; white on ventral parts; iris gold; opercle dark orange inside, edge dark; fins whitish to dusky blackish (tail) except pectorals slightly yellow; not red inside mouth..

Size: grows to 45 cm.

Habitat: usually found over sand or rubble bottoms.

Depth: 0-35 m.

Central Baja and the Gulf of California to Peru, including the Galapagos.

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  • Brackish
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom + water column
  • Bottom
  • Near Bottom
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Estuary
  • Soft bottom only
  • Water column
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • No Data
Egg Type
  • Pelagic larva
  • Pelagic
  • No data
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • Island (s)
  • All species
  • Continent
  • TEP endemic
  • Continent + Island (s)
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • South Temperate (Peruvian Province )
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 45
Depth Range Min
  • 0
Depth Range Max
  • 35