Psalidodon henseli

Psalidodon henseli (de Melo & Buckup, 2006)

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> Characiformes (Characins) > Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Psalidodon: Greek, psalis, -idos = scissors + Greek, odous = teeth (Ref. 45335)henseli: Named for R. Hensel, for his contributions to ichthyology in southern Brazil.
Eponymy: Reinhold Friedrich Hensel (1826–1881) was a German naturalist, ichthyologist and paleontologist. [...] (Ref. 128868), visit book page.

Taxonomic Remarks
Hensel (1870) described Tetragonopterus aeneus as a new species from Porto Alegre, Southern Brazil, however, it is a junior homonym of that of Günther (1860) whose specimens were taken from Oaxaca, Mexico. Steindachner later listed this as a synonym of T. rutilus Jenyns 1842, along with T. obscurus Hensel 1870. Later, Eigenmann (1921:293) listed T. rutilus, T. aeneus Günther and T. aeneus Hensel as junior synonyms of A. fasciatus Cuvier 1819. The obvious homonymy was obscured when Eigenmann placed T. aeneus of Günther as synonym of Astyanax fasciatus aeneus and that of Hensel as synonym of A. fasciatus fasciatus. Through most of the 20th century T. aeneus remained as synonym of A. fasciatus or has been treated as a species of uncertain status. Some authors maintained the association between T. obscurus and T. aeneus Hensel, and used the former as the valid name. F. de Melo and P. Buckup revalidated and redescribed T. aeneus Hensel to avoid homonymy, and gave the new name Astyanax henseli (Ref. 56653).

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

; eau douce pélagique. Tropical

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

South America: Southern Brazil.

Longueur à la première maturité / Taille / Poids / Âge

Maturité: Lm 6.0, range 2 - 11.008 cm
Max length : 11.1 cm SL mâle / non sexé; (Ref. 116915)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Rayons mous dorsaux (Total) : 10 - 11; Rayons mous anaux: 25 - 33. Diagnosis: Distinguished from its congeners except A. saguazu and A. elachylepis by the presence of a second vertically elongate humeral spot (vs. one humeral spot). It differs from saguazu, elachylepis, and fasciatus species complex by the autapomorphic presence of a space between the dentary teeth, which are relatively slender, with cusps positioned close to one another, and by the presence of a maximum of five cusps in each dentary tooth (vs. maximum of 7 cusps). Differs from fasciatus, rutilus, and elachylepis by the presence of 2 - 5, usually 5, tricuspid teeth on the anterior margin of maxilla (vs. 1 - 2 teeth, usually 1, on anterior margin of maxilla) (Ref. 56653).
Body shape (shape guide): fusiform / normal.

Biologie     Glossaire (ex. epibenthic)

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Téléchargez vos références | Références | Coordinateur | Collaborateurs

de Melo, F.A.G. and P.A. Buckup, 2006. Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52. (Ref. 56653)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))

  Préoccupation mineure (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

FAO - Publication: search | FishSource |

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
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Fréquences de longueurs
Conversion de masse
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Abondance
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génôme
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Timbres, pièces de monnaie, divers
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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique (Réf. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00659 - 0.02000), b=3.11 (2.97 - 3.25), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Niveau trophique (Réf. 69278):  3.0   ±0.3 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.).
Vulnérabilité de la pêche (Ref. 59153):  Low vulnerability (10 of 100). 🛈