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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); dumonti: Name 'dumonti' in honor of lberto SantosDumont, the father of aviation, who visited Iguaçu Falls and help establish the Iguaçu National Park.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
South America: Brazil.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 5.6 cm SL mannelijk / geslacht onbekend; (Ref. 137999)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 11; Anale zachte stralen: 8 - 9. This species is distinguished from its congeners by the following set of characters: conspicuous dark-brown vertical bars present, blotches and spots along the sides of body; scaled isthmus; adipose fin present; five scales series below lateral line present; thin dark midlateral stripe present, occupying half scale height in vertical through dorsal-fin origin and one scale height on caudal peduncle; reticulated colour pattern present, with melanophores along the posterior edge of the scales; dorsal and pelvic-fin height, 19.1%-23.7% and 12.1%-18.1% of Ls and predorsal distance 44.5%-48.0% of Ls (137999).
Body shape (shape guide): elongated; Cross section: oval.
This species inhabits a fast-flowing stream with a substrate composed of rocks and pebbles of varying sizes over sandy soil.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Stabile, B.H.M., R.B. dos Reis, A.V. de Oliveira and W.J. da Graça, 2025. A new species of Characidium (Characiformes: Crenuchidae) from the Iguaçu National Park, Rio Iguaçu basin, Paraná, Brazil. J Fish Biol. 107:454-465. (Ref. 137999)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01023 (0.00450 - 0.02327), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.4 ±0.3 se; based on size and trophs of closest relatives |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |