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> Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); nicolasi: Named for Nicolás Bonelli..

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

; sötvatten bentopelagisk. Subtropical

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South America: known from the type locality El Pelado stream, tributary of Uruguay River in Entre Ríos Province, Argentina.

Size / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.1 cm SL hane/ej könsbestämd; (Ref. 83966)

Short description Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt): 10-12; Mjukstrålar i analfenan: 31 - 40; Ryggkotor: 32 - 36. Can be diagnosed from other members of the genus Hyphessobrycon by the possession of a well-defined, oblique and marginal black stripe on each lobe of the caudal fin. Differs further from its congeners by the combination of the following characters: maxilla with 1-3 teeth, bearing 3-10 cusps; outer premaxillary row with 2-3 small teeth, bearing 5 or 7 cusps; iv-v, 27-36 anal-fin rays; 33-36 scales on the longitudinal series; two vertically elongated dark humeral spots; black caudal spot rounded or fan-shaped; dorsal and anal fins with the first rays dappled in black; and presence of minute bony hooks on the dorsal, anal and caudal fins of the mature males (Ref. 83966).

Found in a stream with clear water and rocky/sandy bottom, with irregularly distributed small stones, cobbles and boulders and with shallower sectors with fast-running water up to 60 cm deep, and deeper portions with around 2 m depth and abundant submerged vegetation (Ref. 83966).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

Miquelarena, A.M. and H.L. López, 2010. Hyphessobrycon nicolasi (Teleostei: Characidae) a new species from the Uruguay River basin in the Mesopotamian Region, Argentina. Neotrop. Ichthyol. 8(1):1-6. (Ref. 83966)

IUCN Red List Status (Ref. 130435)

Endangered (EN) (B1ab(iii)); Date assessed: 30 September 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Ytterligare information

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Metabolik
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01413 (0.00671 - 0.02974), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisk nivå (Ref. 69278): 2.9 ±0.3 se; based on size and trophs of closest relatives

Resiliens (Ref. 120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).

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

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Hyphessobrycon nicolasi Miquelarena & López, 2010