Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Gymnotiformes
(Knifefishes) > Apteronotidae
Etymology: Platyurosternarchus: Greek, platys = flat + Greek,oura = tail + Greek, sternon = chest + Greek, aarchos = anus (Ref. 45335); crypticus: The specific epithet came from the Greek word, kryptos, meaning hidden or secret, refers to the previously undetected, albeit very distinct, differences between this species and its sole congener. More on authors: de, Santana & Vari.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: upper portions of the Rio Branco system of the Amazon basin in northeastern Roraima, Brazil and in the easternmost portion of the Rupununi District, Guyana.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.8 cm TL male/unsexed; (Ref. 81220)
The type locality, Moco-Moco Creek, is a small stream with usually clear water but turns muddy for several hours after heavy rainfalls. One specimen was collected from a forest stream with relatively clear water weakly stained in tannins over a gravel and cobble bottom covered with leaf and twig litter. Reported to occur in rapids and streams and regarded as a predator, presumably preys on invertebrates (Ref. 81220).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
de Santana, C.D. and P.V. Vari, 2009. The South American electric fish genus Platyurosternarchus (Gymnotiformes: Apteronotidae). Copeia 2009(2):233-244. (Ref. 81220)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00208 - 0.02098), b=2.98 (2.73 - 3.23), 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
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (16 of 100) .