Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Γλυκού νερού βενθικό(ς); pH range: 6.0 - 6.5; dH range: 10 - ?. Tropical; 25°C - 29°C (Ref. 2060); 5°N - 11°S
South America: Amazon River basin. The active fishing of this fish has reduced both the population size, and occurrence of large individuals, especially around the populated regions of the Amazon (Ref. 50891).
Length at first maturity / Μέγεθος / Βάρος / Age
Γεννητική Ωρίμανση: Lm 149.5, range 145 - 154 cm
Max length : 450 cm TL αρσενικό/απροσδιόριστο; (Ref. 6398); common length : 200 cm TL αρσενικό/απροσδιόριστο; (Ref. 557); μεγ. δημοσιευμένο βάρος: 200.0 kg (Ref. 557)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Obligate air-breathing (Ref. 126274); Often referred to as the largest freshwater fish. Builds a nest of about 15 cm depth and 50 cm width in sandy bottoms. Spawns in April and May and guards the eggs and the young. Obligate air breather. The fish rises to the surface of the water and inspires air in a noisy, distinctive gulp, which is reported to carry for long distances (Ref. 50891). Migrates into higher floodplain habitats with rising water and moves back eventually to lacustrine habitats during low water level (Ref. 116898). Threatened due to over harvesting (Ref. 58490).
Ferraris, C.J. Jr., 2003. Arapaimatidae (Bonytongues). p. 31. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 50891)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
αλιεία: Εμπορικό(ά); Υδατοκαλλιέργειες: Εμπορικό(ά); αλιεία αναψυχής: ναί; Ενυδρείο: Δημόσια ενυδρεία
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Αναφ.
82804): PD
50 = 0.5469 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00594 - 0.02026), b=2.94 (2.77 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Τροφικό Επίπεδο (Αναφ.
69278): 4.5 ±0.0 se; based on diet studies.
Generation time: 11.1 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Ελαστικότητα (Αναφ.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (tm=4-6; Fec=47,000).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).
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Nutrients (Ref.
124155): Calcium = 29.9 [16.6, 81.3] mg/100g; Iron = 1.02 [0.53, 2.23] mg/100g; Protein = 16 [14, 18] %; Omega3 = 0.387 [0.140, 1.140] g/100g; Selenium = 140 [45, 346] μg/100g; VitaminA = 15.6 [3.9, 64.9] μg/100g; Zinc = 0.648 [0.415, 1.065] mg/100g (wet weight); based on
nutrient studies.
