Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Gymnotiformes
(Knifefishes) > Apteronotidae
Etymology: Sternarchorhynchus: Greek, sternon = sternon, + Greek, archos = anus + Greek, rhyngchos = snout (Ref. 45335); hagedornae: Named for Mary Hagedorn of the Smithsonian Institution. More on authors: de & SantanaVari.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: Peru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.9 cm TL male/unsexed; (Ref. 84053); 20.6 cm TL (female)
The type locality of this species in Quebrada Pachija, was described as an open-gallery, high flow stream with a flow of 0.748 m/s, a mean stream depth of 0.397 ± 0.059 m, and a mean stream width of 19.1 ± 1.0 m. It was also observed t in the fastest flowing water sampled; where most adult specimens were captured from a single rocky rapids. These collections
also yielded numerous fry and small juveniles from within floating debris along the fast-flowing
edges of the Río Manu, however, identification of these samples still to be confirmed (Ref. 84053).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
de Santana, C. D. and R.P. Vari, 2010. Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00213 - 0.02147), b=2.98 (2.72 - 3.24), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.3 se; Based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .