Klassifizierung / Names
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Characiformes (Characins) >
Hemiodontidae (Halftooths)
Etymology: Bivibranchia: Latin, bivium = a place where two ways meet; from Latin bi = two + latin, via = way; having or offering two ways; 1877 + Greek, brangchia = gills (Ref. 45335); bimaculata: Named for the two dark spots on the lateral surface of the body and caudal peduncle.
More on author: Vari.
Taxonomic Remarks
See Vari (1985: 517) for detailed description.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser benthopelagisch. Tropical
South America: Corantijn, Suriname, and Maroni River basins.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 12.9 cm SL Männchen/unbestimmt; (Ref. 38289)
Occurs over sandy and rocky bottoms. Has a very protractile mouth which allows it to dig in the sand for organisms on which it feeds. Oviparous (Ref. 205). The juveniles are often found in tributaries which may be very distant from the main river beds (Ref. 12225).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Distinct pairing (Ref. 205).
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
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): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00256 - 0.01126), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (10 of 100).
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