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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
More on authors: Buckup & Reis.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Subtropical
South America: left bank tributaries of the middle Uruguay River basin in Brazil (Ref. 37059). Reported from Argentina (Ref. 56308).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 4.8 cm SL maschio/sesso non determinato; (Ref. 37059)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 12 - 14; Raggi anali molli: 9. Dark spots on dorsal fin form a continuous band across rays; anterior portion of anal fin of males with one or two conspicuous dark blotches, followed by smaller spots on the posterior portion. The third or fourth ray of the pelvic fin longest, reaching the area between anal opening and anal fin origin or reaching anal fin origin (Ref. 27672).
Known from the type locality which is a small creek with clear water and slow to moderate current, with loose stones, and in some places, mud on the bottom. Low vegetation are found along stream margins (Ref. 27672).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Buckup, P.A. and R.E. Reis, 1997. Characidiin genus Characidium (Teleostei, Characiformes) in Southern Brazil, with description of three new species. Copeia 1997(3):531-548. (Ref. 27672)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00452 - 0.02316), b=3.07 (2.89 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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