分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
油鯰科 (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.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; 深度上下限 5 - 10 m (Ref. 55106). 熱帶
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.
南美洲: 來自 Belem 巴西的亞馬遜河上游的到至少伊奇多，祕魯與一些大的支流河川與湖泊包括 Trombetas ，馬得拉群島，黑人， Manacapuru ， Purus ， Tefe ， Jurua ， Jutai 與 Ica。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 58.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 55106); 最大體重: 32.7 kg (Ref. 72380)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
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).
Brachyplatystoma capapretum 特徵為哪一個第一個三在油鯰科之中是獨特的下列特徵
而且最後的在 rachyplatystomatini 之中很獨特。
1. 頜齒雙型性的具有大部份細, 濃密地
有間隔的外部齒與相當少見的 (三到六) 內部的列細長的﹐直的, 向內的
可抑壓的齒。
2. 稚魚 (少於 200 mm SL, 但是一些當
大的當 300 mm SL) 有顯著的顯著, 大的 (兩次或更多倍眼直徑) 深褐色或灰色的斑點集中在側線上面; 底色在標本保存狀態下黃褐色的到普通褐色的。
3. 成魚與稚魚 (超過大約 200 mm
SL) 黑色到非常深灰色或褐色背面
而且突然地 countershaded 沿著一水平的
從吻尖到尾鰭基底, 尤其
沿著身體的後半段在或的正上方在側線; 腹全白色到暗色的乳黃色的; 大多數的標本有淡色的小區塊位於尾鰭上葉前。
4. 成魚的尾鰭一般到水淺地
叉型 , 葉寬的而且幾乎等於。
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).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 來自 Belem 巴西的亞馬遜河上游的到至少伊奇多，祕魯與一些大的支流河川與湖泊包括 Trombetas ，馬得拉群島，黑人， Manacapuru ， Purus ， Tefe ， Jurua ， Jutai 與 Ica。
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 瀕危狀態 (Ref. 130435)
近危 (NT) (A2bd); Date assessed: 14 December 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00477 - 0.01449), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 4.2 ±0.8 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).
