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> Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335).
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.

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

; acqua dolce benthopelagico. Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

North America: USA and northern Mexico.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 11.4 cm SL maschio/sesso non determinato; (Ref. 118583)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 10; Raggi anali molli: 19 - 23; Vertebre: 32 - 33. This species is distinguished from other Astyanax species in central-northern Mexico by the following characters: A 19-23, mode 20 (21-25, mode 23, in A. mexicanus, 18-20, mode 18, in A. rioverde); modally 7 scale-rows between lateral line and dorsal-fin origin (modally 8 in A. mexicanus, A. acatlanensis); nuptial spines or tubercles, just on anal-fin rays, all simple (just on pelvic fins in A. rioverde, and at least some bifid in A. mexicanus, A. acatlanensis); body more slender than A. mexicanus, A. rioverde, mean 34% SL (vs mean 37% SL); anterior fontanel, sharp-tipped (blunt in A. mexicanus); infraorbital IV, rectangular, with no projections (square, with projections in A. acatlanensis, A. mexicanus, A. tehuacanensis); ventral side of ceratohyal, straight (vs undulate). Posterior edge of interopercle, without a spine (with a spine in A. mexicanus, A. tehuacanensis); postcleithrum caudad process concave-sided (straight in A. mexicanus); largest hypuric plate, rostral border straight (concave in A. mexicanus) (Ref. 118583).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Schmitter-Soto, J.J., 2017. A revision of Astyanax (Characiformes: Characidae) in Central and North America, with the description of nine new species. J. Nat. Hist. 51(23/24):1-94. (Ref. 118583)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 08 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Alimentazione
Consumo di cibo
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Ecology
Ecologia

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
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Life cycle
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Anatomy
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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01096 (0.00493 - 0.02437), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.8 ±0.4 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).

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

Astyanax argentatus Baird & Girard, 1854