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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Stichonodontinae
Eponymy: Dr William J Moenkhaus (1871–1947) was an American geneticist and ichthyologist who became Professor of Physiology at Indiana University Medical School (1904–1941), where he was Eigenmann’s colleague. [...] Margit Zarske is the senior author’s wife. She is a graduate teacher who, according to her husband, “…for many years has endured and supported my passion for ichthyology”. (Ref. 128868), visit book page.
More on authors: Zarske & Géry.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico; non migratori. Tropical
South America: Upper Amazon River basin.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 6.4 cm SL maschio/sesso non determinato; (Ref. 38399)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 9; Spine anali: 3 - 4; Raggi anali molli: 29 - 34; Vertebre: 34 - 35. Medium-sized species of Moenkhausia distinguished by the following characters: maxilla longer than snout; 1-2 broad, tri-cuspid maxillary teeth; anal fin with 29-34 branched, relatively long rays; small hooks present on rays of anal fin in males; scales relatively large, 34-36 in longitudinal series; 6.5-7.5 vertical scales before dorsal fin origin; first third of caudal origin covered with small, specialized scales; pre-ventral region rounded; shoulder spot rounded and prominent; no black spot on caudal peduncle; no black saddle-spot before origin of dorsal fin; no silver longitudinal band on side of body. 'Spines' refer to unbranched rays.
Body shape (shape guide): short and / or deep; Cross section: compressed.
In slow-flowing or still waters over gravel or mud.1
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Zarske, A. and J. Géry, 2001. Moenkhausia margitae sp.n. - eine neue Tetra-Art aus dem Stromgebiet des Rio Ucayali in Peru (Teleostei: Characiformes: Characidae). Zool. Abh. Mus. Tierkde. Dresden 51(1):5-14. (Ref. 38399)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di potenziale interesse
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 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=0.01479 (0.00594 - 0.03681), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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