Issue
No recent work, see original description.
Environment: milieu / climate zone / kisaran kedalaman / distribution range
Ekologi
; air tawar bentopelagis; potamodromous (Ref. 51243). Tropical
South America: Tributaries of middle and lower Amazon basin, including Rios Trombretas, Jari, Tapajós, Xingu, Tocantins, and in the coastal rivers of Guyana, Suriname, Fr Guiana; Rios Araguari and Amapá, state of Amapá, Brazil; lower reaches of Río Orinoco, Venezuela.
Length at first maturity / Size / Weight / umur
Kematangan: Lm 22.0, range 22 - 22 cm
Max length : 100.0 cm SL jantan/; (Ref. 12225); Berat maksimum terpublikasi: 40.0 kg (Ref. 12225)
Frequently occurs in counter current zones of principal rivers and creeks. Feeds mainly on fish but also on other animals that fall into the water like small terrestrial invertebrates. Is active at dusk and at night. Reproduction takes place at the onset of the rainy season from December to March. Depending on the size, the female can carry around 6,000 to 60,000 eggs (Ref. 12225). Known for the quality of its flesh (Ref. 27188).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
Status IUCN Red List (Ref. 130435: Version 2025-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: komersial; Akuarium: Komersial
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Acuan
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00447 - 0.01229), b=3.13 (2.98 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Acuan
69278): 3.7 ±0.55 se; based on food items.
Daya lenting (Acuan
120179): sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (tm=1; Fec=6,000).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (73 of 100).
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