Actinopterygii (ray-finned fishes) > Pleuronectiformes
(Flatfishes) > Paralichthyidae
Etymology: Syacium: Greek, yagke, -es = cheek; diminutive (Cfr. Aaptosyax).
Environment / Climate / Range
Marine; benthopelagic; depth range ? - 412 m (Ref. 5951), usually ? - 100 m (Ref. 5217). Tropical, preferred ?; 30°N - 23°S
Western Atlantic: Canada (Ref. 5951) to Florida, USA to São Paulo, Brazil. Records of Syacium micrurum from the eastern Atlantic refer to Syacium guineensis.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 5377); common length : 20.0 cm TL male/unsexed; (Ref. 5217); max. published weight: 500.00 g (Ref. 27584)
Found on soft bottoms of the continental plateau (Ref. 5217, 5377). Feeds on worms and crustaceans. Exhibits sexual dimorphism (Ref. 35237).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205).
Murakami, T. and K. Amaoka, 1992. Review of the genus Syacium (Paralichthyidae) with the description of a new species from Ecuador and Columbia. Bull. Fac. Fish. Hokkaido Univ. 43(2):61-95. (Ref. 10878)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00482 - 0.01372), b=3.10 (2.95 - 3.25), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.39 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (35 of 100) .