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Siluriformes (Catfishes) >
Pangasiidae (Shark catfishes)
Etymology: Pangasianodon: The Vietnamese name of a fish + Greek, odous = teeth (Ref. 45335).
Eponymy: Gigas was a giant in Greek mythology, the child of Uranus and Gaea. The name is applied to taxa that are giants of their kind. (Ref. 128868), visit book page.
Environment: milieu / climate zone / 深さの範囲 / distribution range
生態学
; 新鮮な水 底生の漂泳性; potamodromous (Ref. 51243). Tropical
Asia: endemic to the Mekong basin where it has become rare due to overexploitation.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 300 cm TL オス/雌雄の選別がない; (Ref. 30857); 235.0 cm SL (female); 最大公表体重: 350.0 kg (Ref. 43281); 最大記録サイズ: 10 年 (Ref. 116372)
背面の脊椎 (合計) : 2; 背鰭 (合計) : 7 - 8; 臀鰭: 35; 脊つい: 48. Body without stripes; posterior nostril located near anterior nostril; 7 branched dorsal-fin rays; gill rakers rudimentary or absent; fins grey, never black (Ref. 12693). The center of the eye above the horizontal line through the mouth angle in juveniles; eye totally below the level of mouth angle in subadults and adults. The maxillary and mandibulary pairs of barbels well developed in juveniles; mandibulary barbels become rudimentary in subadults and adults (Ref. 9448). Gigantic size; oral teeth and gill rakers present in small juveniles, absent at about 30-50 cm SL; dorsal, pelvic and pectoral fins without filamentous extensions (Ref. 43281). Distinguished from other large catfish in the Mekong by its lack of teeth and the almost complete absence of barbels (Ref. 2686)
Body shape (shape guide): elongated; Cross section: circular.
Facultative air-breathing (Ref. 126274); A migratory species (Ref. 37772) which occurs in medium to large-sized rivers (Ref. 12975). Feeds on detritus and algae on the bottom (Ref. 58784); feeds only on vegetation in the river but takes other food in captivity; little is known on its general pattern of life and migratory journeys for spawning (Ref. 2686). Shows one of the fastest growth rates of any fish in the world, reaching 150 to 200 kg in 6 years (Ref. 12693). Cited in the Guinness Book of Records as largest freshwater fish (Ref. 6472). Marketed fresh (Ref. 12693). Maximum length of 300 cm needs confirmation. Threatened due to over harvesting and habitat loss (Ref. 58490).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Roberts, T.R. and C. Vidthayanon, 1991. Systematic revision of the Asian catfish family Pangasiidae, with biological observations and descriptions of three new species. Proc. Acad. Nat. Sci. Philad. 143:97-144. (Ref. 7432)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-1)
Human uses
水産業: 商業; 水産養殖: 実験の
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (参照
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00387 - 0.01555), b=3.14 (2.96 - 3.32), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 2.3 ±0.17 se; based on food items.
Generation time: 12.9 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (参照
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Assuming tm=5-10).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (79 of 100).
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