Klassifizierung / Names
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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Stichonodontinae
Etymology: Nematocharax: Greek, nemas, -atos = filament + Greek, charax = a marine fish without identification (Ref. 45335).
More on authors: Weitzman, Menezes & Britski.
Taxonomic Remarks
See Weitzman, Menezes & Britski for detailed description.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser benthopelagisch; pH range: 6.0 - 7.5; dH range: 10 - 20. Tropical; 22°C - 26°C (Ref. 13614)
South America: Jequitinhonha River basin.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 5.2 cm SL Männchen/unbestimmt; (Ref. 137577); 3.5 cm SL (female)
Differs from its unique congener, Nematocharax costai, by having the following characters: presence of hooks or spinules on dorsal and pelvic-fins (vs. absence); more than seven anal-fin rays with spinules (vs. five rays); absence of a long dark pink horizontal mark on the caudal peduncle (vs. presence); four or fewer supraneurals (vs. five); pelvic-fin filament pale rosy (vs. yellow) (Ref. 93323).
Body shape (shape guide): short and / or deep.
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Oyakawa, O.T., 1998. Catalogo dos tipos de peixes recentes do Museu de Zoologia da USP. I. Characiformes (Teleostei: Ostariophysi). Pap. Avuls. Zool. 39(23):443-507. (Ref. 27925)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref. 82804) |
PD50 = 0.7500 [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). |
Trophische Ebene (Ref. 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
Widerstandsfähigkeit (Ref. 120179) |
hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.). |
Anfälligkeit der Fischerei (Ref. 59153) |
Low vulnerability (11 of 100). 🛈 |