Actinopteri (ray-finned fishes) > Eupercaria/misc
(Various families in series Eupercaria) > Sciaenidae
(Drums or croakers)
Etymology: Plagioscion: Greek, plagios = oblique + Greek, skiaina, skion = barbel, red mullet (Ref. 45335).
More on author: Castelnau.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: Amazon, Orinoco, and rivers of Guianas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 34.6 cm SL male/unsexed; (Ref. 36888)
Occurs mainly in estuaries although it is rather rare (Ref. 35237). Occupies the same biotope as Plagioscion squamosissimus but its frequency of capture is notably less (Ref. 27188). Juveniles feed on insect larvae and crustaceans like copepods and decapods while adults feed essentially on fish. Easily caught during breeding season (Ref. 35237). An important foodfish.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Casatti, L., 2003. Sciaenidae (Drums or croakers). p. 599-602. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36888)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: commercial; aquaculture: commercial; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00248 - 0.01110), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.48 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (32 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .