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> Eupercaria/misc (Various families in series Eupercaria) > Sciaenidae (Drums or croakers)
Etymology: Pachyurus: Greek, pachys = fat + Greek, oura = tail (Ref. 45335); stewarti: Named for Dr. Donald Stewart (formerly at FMNH) for his contributions to the knowledge of Neotropical fishes.
Eponymy: Dr Donald James Stewart (d: 1946) is Professor of Environment & Forest Biology at the College of Environmental Science and Forestry, State University of New York, Syracuse, where he presently teaches Ichthyology & Tropical Ecology. [...] (Ref. 128868), visit book page.

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

; eau douce pélagique. Tropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

South America: only known from the Río Napo and Río Aguarico, eastern Ecuador, in the western portion of the Rio Amazonas basin.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 19.2 cm SL mâle / non sexé; (Ref. 54848)

Description synthétique Clés d'identification | Morphologie | Morphométrie

A species of Pachyurus with a unique coloration pattern of about twelve brown vertical bars and ellipsoid blotches on the side of trunk and a thick horizontal stripe from the middle of the caudal peduncle to the front of the caudal-fin base.

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Casatti, L. and N.L. Chao, 2002. A new species of Pachyurus Agassiz 1831 (Teleostei: Perciformes: Sciaenidae) from the Río Napo basin, Eastern Ecuador. Zootaxa 38:1-7. (Ref. 54848)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)

Données manquantes (DD) ; Date assessed: 30 July 2019

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 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00851 (0.00415 - 0.01744), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.5 ±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 (13 of 100).

Pachyurus stewarti Casatti & Chao, 2002