分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Apteronotidae (Ghost knifefishes)
無背魚科 (Ghost knifefishes) > Apteronotinae
Etymology: Megadontognathus: Greek, megas, megalos = great + Greek, odous = teeth + Greek, gnathos = jaw (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Known only from the Cuyuni Basin and the Rio Caroní in Venezuela.
南美洲: 在委內瑞拉已知只來自 Cuyuni 流域與 Rio Caroni了。
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 23.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 26457)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 0; 背的軟條 (總數): 0; 臀鰭軟條: 159 - 169; 脊椎骨: 90. Considered unique among apteronotids by its dentition: 2-3 large conical teeth on the posterior end of dentary; 2-3 minute, conical teeth on each premaxillary.
被認為是獨特的在電鰻之中用它的生齒: 2-3 大的錐形牙齒在齒骨的後端; 2-3 細小的, 錐形牙齒在每個上頜骨前的。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在委內瑞拉已知只來自 Cuyuni 流域與 Rio Caroni了。
Mago-Leccia, F., 1994. Electric fishes of the continental waters of America. Fundacion para el Desarrollo de las Ciencias Fisicas, Matematicas y Naturales (FUDECI), Biblioteca de la Academia de Ciencias Fisicas. Matematicas y Naturales, Caracas, Venezuela. vol. 29 . 206 p. (Ref. 26457)
IUCN 瀕危狀態 (Ref. 130435)
極危 (CR) (B2ab(iii)); Date assessed: 02 October 2020
人類使用
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00145 - 0.00871), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (14 of 100).