Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Pimelodidae
Etymology: Pseudoplatystoma: Greek, pseudes = false + Greek, platys = flat + Greek, stoma = mouth (Ref. 45335).
Environment / Climate / Range
Freshwater; demersal; pH range: 6.0 - 8.0; dH range: 4 - 30; potamodromous (Ref. 51243); depth range 5 - ? m. Tropical; 24°C - 28°C (Ref. 1672); 8°N - 11°S
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 53 - ? cm
Max length : 104 cm TL male/unsexed; (Ref. 40637); max. published weight: 70.0 kg (Ref. 35381)
South America: Amazon, Corantijn, Essequibo, Orinoco and Paraná River basins.
Occurs throughout the principal riverbeds and sometimes in the flooded areas of forests. Its biology is similar to that of P. tigrinum but it appears to be more fond of shady streams. Feeds at night on fish (loricariids, cichlids and characoids) as well as crabs (Ref. 6868). Confines its foraging activities to riverbeds. Its yellowish flesh is succulent and like that of other silurids, it is without bones (Ref. 27188). Females reach a more notable size. They become sexually mature at 56 cm, males at 45 cm. Fecundity is estimated at 8 million eggs per kg (Ref. 35381). Utilized for human consumption.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lundberg, J.G. and M.W. Littmann, 2003. Pimelodidae (Long-whiskered catfishes). p. 432-446. 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. 36506)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: commercial; gamefish: yes; aquarium: public aquariums
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00483 - 0.01723), b=3.06 (2.89 - 3.23), based on LWR estimates for species & (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.4 ±0.78 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.31-0.47; tm=3-5; Tmax=8.7).
Vulnerability (Ref. 59153
): Moderate vulnerability (39 of 100) .