Classification / Names
Common names from other countries
Main reference
Size / Weight / Age
Max length : 73.0 cm TL male/unsexed; (Ref. 5217); common length : 45.0 cm TL male/unsexed; (Ref. 5217)
Environment
Freshwater; brackish; pelagic
Climate / Range
Subtropical, preferred ?; 10°N - 35°S
Distribution
South America: Argentina (Rio de la Plata down to Buenos Aires, Rio Paraná), Uruguay (Rio Uruguay), Brazil (Rio Tapajoz, Amazon as far up as Rio Jurua and down probably to mouth), the Guianas (Surinam, Guyana), Venezuela and Colombia (Orinoco from Rio Manacacias at Puerto Gaitan to Orinoco mouth). Reported from French Guiana (Ref. 27233).
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 0;
Anal
spines: 0;
Anal
soft rays: 38 - 46. Belly with 20 to 24 + 12 to 14, total 32 to 37 scutes. Lower jaw projecting; upper jaw with a toothed hypo-maxillary bone between hind tip of pre-maxilla and lower bulge of maxilla blade; lower gill rakers 23 to 31 (in fishes of 10 to 50 cm standard length, with the lower numbers in larger fishes). Pelvic fins with distinct axillary scale; anal fin origin under dorsal fin base.
IUCN Red List Status (Ref. 115185)
Threat to humans
Harmless
Human uses
Fisheries: subsistence fisheries
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Tools
Special reports
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Internet sources
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level
4.5 ±0.80 se; Based on food items.
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)
Vulnerability
Moderate to high vulnerability (48 of 100)
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