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Syacium longidorsale Murakami and Amaoka, 1992
Pompadour flounder

Life   Vertebrata   Fish   Paralichthyidae   Syacium

Syacium longidorsale Copyright Michel Lamboeuf · 0
Syacium longidorsale

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Main identification features
  • eyes together, parallel
  • d: spines 3-5 elongate
  • pectoral: long 1st ray
Eyes on left side; body height 42-48% of standard length; head length 26-28% of standard length; snout profile convex at most a slight notch before top eye; snout larger than eye, distance from snout tip to top eye <24% of head length; eyes parallel; width between eyes <6% of head length; mouth 31-37% head length, ends under middle lower eye; fixed teeth in 2 rows on upper jaw, 1 row on lower jaw; 7-9 short, fat, serrated rakers on lower arm of 1st gill arch; lateral line not extending onto head, relatively straight; base of eye side pelvic on midline of body; urinary papilla on blind side, immediately behind anus; eye-side pectoral 67-78% of head length (to 115% in male, with 1st ray elongate); 82-92 dorsal rays, 3rd-5th rays long, ~30-50% of head length; 63-74 anal rays; 50-57 lateral line scales.

Eye side grey-brown, dorsal and anal with row of dark spots, pelvic a little darker, rear 1/2 of tail streaked; blind side yellow-white.

Size: 15 cm.

Habitat: sand and mud bottoms.

Depth: 10-40 m.

SE Gulf of California to Peru.

Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 40 m.
Depth Range Min: 10 m.
Diet: bony fishes; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=24; Southern limit=-7; Western limit=-107; Eastern limit=-78; Latitudinal range=31; Longitudinal range=29.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only; Sand & gravel.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 15 cm.
Regional Endemism: Continent only; Continent; TEP endemic; Continental TEP endemic; 3 provinces (Cortez + Mexican + Panamic) endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;

Scientific source:

Links to other sites

  • Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo .  Derechos reservados de los autores y Conservación Internacional.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen III. Vertebrados - Parte 2., FAO3:1201-1813.
  • Jimenez-Prado, P., Béarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.
  • Murakami , T. and Amaoka, K., 1992., Review of the genus Syacium (Paralichthyidae) with the description of a new species from Ecuador and Columbia., Bull. Fac. Fish. Hokkaido Univ., 43:61-95.


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