Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Pimelodidae
Etymology: Brachyplatystoma: Greek, brachys, eia = short + Greek, platys = flat + Greek, stoma = mouth (Ref. 45335); capapretum: The name capapretum is from Portuguese. While seeking information about this undescribed species in Belém, the authors encountered only one person who distinguished the species from the similar "filhote" or "piraiba", B. filamentosum. This o.
Environment / Climate / Range
Freshwater; benthopelagic; depth range 5 - 10 m (Ref. 55106). Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 58.1 cm SL male/unsexed; (Ref. 55106); max. published weight: 32.7 kg (Ref. 72380)
Morphology | Morphometrics
Brachyplatystoma capapretum is characterized by the following features of which the first three are unique among the Pimelodidae
and the last is unique among the rachyplatystomatini.
1. Jaw teeth dimorphic with mostly fine, densely
spaced outer teeth and relatively few (three to six) inner rows of slender, straight, inwardly
2. Juveniles (less than 200 mm SL, but some as
large as 300 mm SL) marked by bold, large(twice or more times eye diameter) dark brown or gray spots centered above lateral line; ground color in preservative tan to medium brown.
3. Adults and juveniles (more than ca. 200 mm
SL) black to very dark gray or brown dorsally
and abruptly countershaded along a horizontal
from snout tip to caudal-fin base, especially
along posterior half of body just above or at lateral line; ventrally plain white to dusky cream; most specimens with light patch anterior to upper lobe of caudal fin.
4. Caudal fin of adults moderately to shallowly
forked, lobes broad and nearly equal.
South America: Amazon River from Belém, Brazil upriver to at least Iquitos, Peru, and several large tributary rivers and lakes including Trombetas, Madeira, Negro, Manacapuru, Purus, Tefé, Juruá, Jutaí, and Içá.
Collected below 200 m asl in the Amazon mainstream and largest white and black water triburtaries; trawled 10s to 100s m off shore, on mud and sand substrates (Ref. 55106).
Lundberg, J.G. and A. Akama, 2005. Brachyplatystoma capapretum: a new species of Goliath catfish from the Amazon basin, with a reclassification of allied catfishes (Siluriformes: Pimelodidae). Copeia 2005(3):492-516.
IUCN Red List Status (Ref. 90363)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00223 - 0.01295), b=3.10 (2.89 - 3.31), based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 4.3 ±0.8 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (49 of 100) .