Classificatie / Namen
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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.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water pelagisch. Tropical
South America: only known from the Río Napo and Río Aguarico, eastern Ecuador, in the western portion of the Rio Amazonas basin.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 19.2 cm SL mannelijk / geslacht onbekend; (Ref. 54848)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
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.
Body shape (shape guide): fusiform / normal.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00871 (0.00431 - 0.01761), b=3.07 (2.90 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.5 ±0.3 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (23 of 100). 🛈 |