Shorefishes of the Eastern Pacific online information system

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Species: Achirus klunzingeri, Brown sole, Tan sole

All Families:   All Genera:   All Species:

uniform brown + faint lines
eye-side: scales with black hairs
D 59-63; LL > 77
hole connects gill chambers

Achirus klunzingeri (Steindachner, 1879)

Tan sole, Brown sole

Body oval; eyes on right side; snout rounded; mouth small, arched, a little below snout; lower lip on eyed side fringed; front margin of head with short tentacles; rear edge of preopercle covered with skin, visible as a superficial groove; gill openings wide, united before pelvic fins; an opening connects gill chambers on both sides; dorsal origin ~ above eye; dorsal rays 59-63; anal rays 46-48; pectoral rays 2-5; pelvic on eye side fused to anal; pectorals present or absent; lateral line from head to tail, straight, with perpendicular branches running across body; body covered with rough scales; scales on eyed side with black hair-like filaments; lateral line with >77 scales.

More or less uniform brown, sometimes with faint dark cross-lines.

Size: grows to about 23 cm.

Inhabits sand or mud bottoms.

Depth: 10-40 m.

Central Mexico to Ecuador; the Galapagos.

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  • Marine
  • Brackish
  • Freshwater
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Mud
  • Sand & gravel
  • Soft bottom only
  • Estuary
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
  • Bony fishes
  • Mobile benthic worms
Egg Type
  • No data
  • Pelagic larva
  • Pelagic
Global Endemism
  • All species
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • TEP endemic
  • All species
  • Continent
  • Island (s)
  • Continental TEP endemic
  • Mexican + Panamic provinces endemic
  • Continent + Island (s)
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Depth Range Min
  • 10
Depth Range Max
  • 40
Length Max
  • 23