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Species: Cyclopsetta chittendeni, Mexican Flounder

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C 3 rear spots
dark blotch under pectoral
pectoral: plain, edge oblique, 14-16
LL straight, 74-80

Cyclopsetta chittendeni Bean, 1895

Mexican Flounder

Head profile before eye convex; eyes on left side of head, separated by flat, narrow to moderate space; mouth large, top jaw 48-56% of head length, ends at or behind rear edge of eye; jaws on blind side not arched; 1 row of immovable sharp slender teeth on both jaws, large canines at front; gill rakers short and stout, 8-9 lower rakers; dorsal fin origin before top eye, 82-90 rays, front rays a little longer than rear rays and free of membranes; anal fin 63-69 rays; pectoral fins on both sides of body, with branched rays, eye-side pectoral 14-16 rays, outer edge of fin oblique; pelvic fins symmetrically positioned on belly, base of eye-side fin on body midline, short bases; urinary papilla on blind side, behind anus; scales small, smooth, 74-80 on lateral line; lateral line well developed on both sides, relatively straight, from just behind eye to base of tail fin, no branch under lower eye.

Brown; a large dark blotch behind base of pectoral fin; dorsal and anal fins with row of dark spots containing pale areas, 2-3 on each fin; eye-side pectoral plain; tail fin with 3 large dark spots on its rear border.

Reaches 33 cm.

Lives on soft bottoms.

Depth range: 6-150 m.

The Gulf of Mexico to Sao Paulo State, Brazil.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Mud
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent + Island (s)
  • Continental primarily
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 33
Depth Range Min
  • 6
Depth Range Max
  • 150