Shorefishes of the Greater Caribbean online information system

Español  Contact

Species: Syacium gunteri, Shoal Flounder

All Families:   All Genera:   All Species:

body deep
eyes moderately separated
D 74-85; A 59-68
tail base: dark blotch
male: long top pectoral rays

Syacium gunteri Ginsburg, 1933

Shoal Flounder

Body a deep oval, height 50-56% of SL; eyes on left side, lower distinctly before upper, wide between them (up to 55% of diameter of lower eye, widest in males); head length 26-28% of SL; snout with a notch before top eye;mouth large, ends under middle of lower eye; fixed teeth in 2 rows on upper jaw, 1 row on lower jaw, front teeth larger than side teeth; 74-85 dorsal rays; 59-68 anal rays; pectoral fins on both sides of body, with branched rays, eye-side pectoral with first ray elongated in male; pelvic fins symmetrically positioned on belly, base of eye-side fin on body midline, short bases; urinary papilla on blind side, immediately behind anus; scales rough on eye side, smooth on blind side; 45-55 lateral line scales; lateral line well developed on both sides, not extending onto head, relatively straight.

Eye side grey-brown, a diffuse dark blotch on lateral line under last 10 dorsal rays.

Size: 20 cm.

Habitat: sand and mud bottoms.

Depth: 10-174 m.

Florida to French Guiana, also in Brazil.

High Resolution Map Download

Species Data Create Report Export as Word File Export as Excel File
  • 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
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
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
  • 20
Depth Range Min
  • 10
Depth Range Max
  • 174