Shorefishes of the Eastern Pacific online information system

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Species: Diplectrum euryplectrum, Big-head sand-perch, Wide-spur sand-perch

All Families:   All Genera:   All Species:

yellow stripe on cheek -> 2-3 across operculum
soft D: black stripe along base
body: 4 double dark bars
preopercular spur: deep, square, 6-12 spines

Diplectrum euryplectrum Jordan & Bollmann, 1890

Big-head sand-perch, Wide-spur sand-perch

Body elongate, moderately compressed; head large (~ 43% of SL); angle of preopercle a wide, squarish bony spur with 6-12 large spines, much higher than remaining part of upper border of preopercle; 21-27 gill rakers; dorsal X, 12-13; anal III, 8 rays; tail slightly forked; snout and between eyes scaleless; scales moderately small, rough; 46-52 lateral line scales, 8-13 vertical rows scales on cheek.

Grey brown; body with ~ 4 double dark bars, 2 horizontal rows of gold speckles;  yellow lines on head - bar from eye to top jaw, stripe from top jaw to behind eye to divide into 2-3 branches to mid and lower & sometimes upper operculum; dark blotch on upper opercle; spiny dorsal membranes blue, spine tips orange; soft dorsal pale grey, with 2 yellow stripes, a black stripe along its base; tail & pelvics yellow, tail with dark blotch on base,  orange bars & white tips; anal fin white, with yellow stripe.

Size: 20 cm.

Habitat: soft bottoms.

Depth: 15-150 m.

Southern Baja and the lower Gulf of California to northern Peru, the Revillagigedos and the Galapagos.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom only
  • Bottom
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
  • Soft bottom only
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Bony fishes
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Pelagic larva
  • No data
  • Pelagic
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Island (s)
  • Continent + Island (s)
  • TEP endemic
  • Continent
  • All species
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 20
Depth Range Min
  • 15
Depth Range Max
  • 150