分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
; 新鮮な水 底生の; 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. International trade restricted (CITES II, since 1.7.75). 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 / サイズ / 重さ / 年齢
Maturity: Lm ?, range 145 - 154 cm
Max length : 450 cm TL オス/雌雄の選別がない; (Ref. 6398); common length : 200 cm TL オス/雌雄の選別がない; (Ref. 557); 最大公表体重: 200.0 kg (Ref. 557)
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).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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)
水産業: 商業; 水産養殖: 商業; ゲームフィッシュ: はい; 水族館・水槽: 公共の水族館
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5938 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00596 - 0.02017), b=2.94 (2.77 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
栄養段階 (Ref. 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.
回復力 (Ref. 120179
): 低い, ４．５年～１４年の倍増期間の最小個体群 (tm=4-6; Fec=47,000).
弱み (Ref. 59153
): Moderate to high vulnerability (54 of 100) .
Nutrients (Ref. 124155
): Calcium = 38.2 [18.5, 92.8] mg/100g ; Iron = 0.808 [0.489, 1.530] mg/100g ; Protein = 16.6 [14.1, 19.0] % ; Omega3 = 0.294 [0.131, 0.684] g/100g ; Selenium = 125 [44, 359] μg/100g ; VitaminA = 18.4 [5.4, 69.6] μg/100g ; Zinc = 0.643 [0.378, 1.031] mg/100g (wet weight); based on nutrient studies.