Classification / Names
Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
>
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Acestrorhamphinae
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 / profondeur / distribution range
Écologie
; eau douce benthopélagique. Tropical
North America: USA and northern Mexico.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 11.4 cm SL mâle / non sexé; (Ref. 118583)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Rayons mous dorsaux (Total) : 10; Rayons mous anaux: 19 - 23; Vertèbres: 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).
Cross section: compressed.
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-1)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
Télécharger en XML
Sources Internet
Estimates based on models
Phylogenetic diversity index (Réf.
82804): PD
50 = 0.5000 [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).
Niveau trophique (Réf.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
Résilience (Réf.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
🛈
