Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Gymnotiformes
(Knifefishes) > Apteronotidae
Etymology: Apteronotus: Greek, apteros = without wings / (in this cases, fins) + Greek, noton = back (Ref. 45335); eschmeyeri: Named in honor of William N. Eschmeyer who greatly contributed to ichthyology with his 'Catalog of Fishes' (Ref. 50571).
Environment / Climate / Range
Freshwater; benthopelagic. High altitude, preferred ?
South America: Magdalena Basin, Rio Bogotá and Rio Luisa in Colombia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.4 cm TL male/unsexed; (Ref. 50571)
Morphology | Morphometrics
soft rays: 160 - 175;
Vertebrae: 77. Blotchy coloration on body, clear band from chin to the beginning of the dorsal mid-sagittal electroreceptororgan, two clear bands surrounding caudal peduncle in specimens up to 16.5 cm TL, mouth rictus passing the posterior margin of orbit (Ref. 50571).
Found in slow-flowing waters (Ref. 50571).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
de Santana, C.D., J.A. Maldonado-Ocampo, W. Severi and G.N. Mendes, 2004. Apteronotus eschmeyeri, a new species of ghost knifefish from the Magdalena Basin, Colombia (Gymnotiformes: Apteronotidae). Zootaxa 410:1-11. (Ref. 50571)
IUCN Red List Status (Ref. 109396)
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
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00141 - 0.00937), b=3.11 (2.89 - 3.33), 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
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low to moderate vulnerability (32 of 100) .