Shorefishes of the Eastern Pacific online information system

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Species: Citharichthys sordidus, Mottled flounder, Pacific sanddab

All Families:   All Genera:   All Species:

eyes large, lower in front, ridge between
alargado (depth 38-43% SL)
LL 61-70
lower gill rakers 12-16
D 86-102; A 67-81

Citharichthys sordidus (Girard, 1856)


Pacific sanddab,    Mottled flounder


Body elongate, depth 38-43% SL; head < 30% of SL;eyes on left side (uncommonly on right side),  large, lower eye slightly before upper eye, its diameter greater than snout length; sharp bony ridge over lower eye; mouth medium length, ends under center of lower eye; blind side jaws not arched; teeth ~ equally developed on both sides of jaws, in 1 series of immovable teeth on each jaw, no canines but front teeth a little enlarged; gill rakers slender, short, 12-16 lower rakers; 86-102 dorsal rays; 67-81 anal rays; eye side pectoral shorter than head, reaches about middle of eye when folded forward; base of eye side pelvic on midline of body; urinary papilla on blind side, immediately behind anus; eye-side lateral line ~ straight, from edge of opercle to tail base; scales rough, 61-70 lateral line scales.

Eye-side dull brown, mottled with brown and black, sometimes with yellow and orange spots; blind-side dull white to tan.

Size: 41 cm.

Habitat: sandy and mud bottoms.

Depth: 9-549 m.

The Bering Sea to the southern tip of Baja.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Bony fishes
Egg Type
  • No data
  • Pelagic larva
  • Pelagic
Global Endemism
  • TEP non-endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • All species
  • California province, primarily
  • Temperate Eastern Pacific, primarily
  • Tropical Eastern Pacific (TEP) non-endemic
  • Continent only
  • Continent
  • Vagrant
Climate Zone
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 41
Depth Range Min
  • 9
Depth Range Max
  • 549