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> Characiformes (Characins) > Crenuchidae (South American darters) > Crenuchinae
Etymology: Crenuchus: Greek, krenoychos = the God of running waters.
More on author: Günther.

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoet water pelagisch; pH range: 5.5 - 6.5; dH range: ? - 5. Tropical; 24°C - 28°C (Ref. 1672)

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South America: Orinoco and Amazon River basins; and coastal rivers in the Guianas.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 5.7 cm TL mannelijk / geslacht onbekend; (Ref. 37059)

Little is known of its biology in its natural environment. Unlike most Characoids, this species is typically solitary and territorial. The dimensions of the mouth confirms its predatory habits. Its food consists mainly of Ephemeroptera larvae, copepods and ostracods. In the aquarium, only the male guards the spawned eggs. About a hundred eggs are deposited on the substrate and dispersed by the male (Ref. 12225). Reproduces by laying eggs on stones or submerged leaves (Ref. 27188).

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

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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)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 19 October 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01175 (0.00447 - 0.03086), b=3.08 (2.86 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.3 ±0.42 se; based on food items.

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec=60).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Crenuchus spilurus Günther, 1863