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Siluriformes (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
Etymology: Brachyplatystoma: Greek, brachys, eia = short + Greek, platys = flat + Greek, stoma = mouth (Ref. 45335); capapretum: The name capapretum is from Portuguese. While seeking information about this undescribed species in Belém, the authors encountered only one person who distinguished the species from the similar "filhote" or "piraiba", B. filamentosum. This o.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性; 深さの範囲 5 - 10 m (Ref. 55106). Tropical
South America: Amazon River from Belém, Brazil upriver to at least Iquitos, Peru, and several large tributary rivers and lakes including Trombetas, Madeira, Negro, Manacapuru, Purus, Tefé, Juruá, Jutaí, and Içá.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 58.1 cm SL オス/雌雄の選別がない; (Ref. 55106); 最大公表体重: 32.7 kg (Ref. 72380)
簡単な記述
検索表 | 形態学 | 形態計測学
This species is distinguished by the following characters of which the first three are unique among the Pimelodidae and the last is unique among the Brachyplatystomatini: jaw teeth dimorphic with mostly fine, densely spaced outer teeth and relatively few (3-6) inner rows of slender, straight, inwardly depressible teeth; juveniles (< 200 mm SL, but some as large as 300 mm SL) marked by bold, large (twice or more times eye diameter) dark brown or gray spots centered above lateral line; ground color in preservative tan to medium brown; adults and juveniles (> ca. 200 mm SL) black to very dark gray or brown dorsally and abruptly countershaded along a horizontal from snout tip to caudal-fin base, especially along posterior half of body just above or at lateral line; ventrally it is plain white to dusky cream; most specimens with light patch anterior to upper lobe of caudal fin; caudal fin of adults is moderately to shallowly forked, lobes broad and nearly equal (Ref. 55106).
Body shape (shape guide): elongated.
Collected below 200 m asl in the Amazon mainstream and largest white and black water triburtaries; trawled 10s to 100s m off shore, on mud and sand substrates (Ref. 55106).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Lundberg, J.G. and A. Akama, 2005. Brachyplatystoma capapretum: a new species of Goliath catfish from the Amazon basin, with a reclassification of allied catfishes (Siluriformes: Pimelodidae). Copeia 2005(3):492-516. (Ref. 55106)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
用具
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00507 - 0.01497), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 4.2 ±0.8 se; based on size and trophs of closest relatives
回復力 (参照
120179): 手段, 1.4年~4.4年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Moderate to high vulnerability (48 of 100).
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