Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Gymnotiformes
(Knifefishes) > Hypopomidae
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); pinnicaudatus: Specific name is derived from the Latin pinna, meaning feather, and caudatus, meaning tailed, because of the distinctive compressed and "feather-like" appearance of the caudal filament of the male.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.6 cm TL male/unsexed; (Ref. 37053)
Morphology | Morphometrics
South America: eastern South America from the Catatumbo River basin, Orinoco and the Guianas to La Plata River basin; Amazon River basin in Peru.
Low conductivity, stagnant water, hypoxic-anoxic habitats, associated with emergent and floating vegetation (Ref. 37053). Encountered in shallow edges of a stream (Ref. 75964). Maximum length reported to reach 20 cm SL (Ref. 12202).
Albert, J.S., 2003. Hypopomidae (Bluntnose knifefishes). p. 494-496. 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. 37053)
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .