Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Pimelodidae
Etymology: Calophysus: Greek, kalos, kallos = beautiful + Greek, physa = tube (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
South America: Amazon and Orinoco River basins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 6398)
Is reported to commonly attack the fishes caught in fishermen's nets and seines as well as those hooked on trotlines or gaffed (Ref. 6868).
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. 124695)
Threat to humans
Fisheries: minor commercial; aquaculture: commercial; aquarium: public aquariums
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00386 - 0.01183), b=3.12 (2.97 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.47 se; based on food items.
Generation time: 2.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100) .
Nutrients (Ref. 124155
): Calcium = 194 [97, 379] mg/100g ; Iron = 1.44 [0.90, 2.72] mg/100g ; Protein = 17.1 [15.8, 18.4] % ; Omega3 = 0.209 [0.103, 0.426] g/100g ; Selenium = 80.2 [36.6, 193.0] μg/100g ; VitaminA = 20.9 [9.7, 44.3] μg/100g ; Zinc = 1.75 [1.26, 2.39] mg/100g (wet weight);