Brazil country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found only in the rio da Várzea headwaters, an affluent of rio Negro, a tributary of the upper portions of the rio Iguaçu in Paraná State (Ref. 72395).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Abilhoa, V. and L.F. Duboc, 2007
National Database:

Common names from other countries

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Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); varzeae: Named for its type locality, rio da Várzea drainage, a tributary of the upper rio Iguaçu basin..

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

; agua dulce bentopelágico. Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

South America: Rio da Várzea headwaters of the Rio Iguaçu basin in Brazil.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 8.3 cm SL macho / no sexado; (Ref. 72395)

Short description Claves de identificación | Morfología | Morfometría

Radios blandos dorsales (total) : 11; Radios blandos anales: 20; Vértebra: 36 - 38.

Inhabits headwater stream with clear water, light to moderate current and bottom consisting of stones, sand and moderate amount of vegetal debris (Ref. 72395).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Abilhoa, V. and L.F. Duboc, 2007. A new species of the freshwater fish genus Astyanax (Ostariophysi: Characidae) from the rio Iguaçu basin, southeastern Brazil. Zootaxa 1587:43-52. (Ref. 72395)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 07 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

Más información

Trophic ecology
componentes alimenticios
Diet compositions
Food consumptions
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Despredadores

Ecology
Ecología
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Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Recruitments
Abundances

Life cycle
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Fecundities
Spawnings
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Egg(s)
Egg developments
Larva
Dinámica larvaria

Distribution
Países
Áreas FAO
Ecosistemas
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BRUVS - Videos

Anatomy
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Physiology
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Tipo de natación
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Visual pigment(s)
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Toxicities (LC50s)

Genetics
Genética
Electrophoreses
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Human related
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Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.

Outreach
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Taxonomy
Nombres comunes
Sinónimos
Morfología
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References
Referencias

Herramientas

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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 2.9 ±0.4 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).

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

Astyanax varzeae Abilhoa & Duboc, 2007