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> Characiformes (Characins) > Characidae (Characins; tetras) > Stevardiinae
Etymology: More on authors: Weitzman & Ortega.

Issue
Weitzman & Ortega (1995). See Weitzman & Menezes (1998) for relationships.

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

; eau douce pélagique. Tropical; 23°C - 26°C (Ref. 26646)

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South America: Manu and Tambopata River basins in Peru.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 1.6 cm SL mâle / non sexé; (Ref. 26646)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Rayons mous dorsaux (Total) : 9 - 10; Rayons mous anaux: 19.

Inhabits small black water streams in areas forested by the palm Maurita flexuosa. Usually occurs in the gallery forest areas in pools of small streams of 2-4m wide. The water depth where this species occurs is usually 20-60cm and the current is slow. The bottom is usually sandy but may be pebbly and with much forest debris. Commonly found near the shoreline where they can seek protection from predators among vegetation. Commonly swims near the surface of the water in schools of about 20 to 80 individuals.

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Weitzman, S.H. and H. Ortega, 1995. A new species of Tyttocharax (Teleostei: Characidae: Glandulocaudinae: Xenurobryconini) from the Rio Madre de Dios Basin of Peru. Ichthyol. Explor. Freshwat. 6(2):129-148. (Ref. 26646)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Préoccupation mineure (LC) ; Date assessed: 25 April 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [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).

Niveau trophique (Ref. 69278): 3.0 ±0.4 se; based on size and trophs of closest relatives

Résilience (Ref. 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).

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Tyttocharax tambopatensis Weitzman & Ortega, 1995