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) >
Rhamphichthyidae (Sand knifefishes)
刀魚科 (Sand knifefishes)
Etymology: Gymnorhamphichthys: Greek, gymnos = naked + Greek. Rhamphos = beak, bill + Greek, ichthys = fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: upper Mamoré and Orinoco River basins.
南美洲: 上面的 Mamore 與奧里諾科河到阿根廷流域.(參考文獻 9086)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 21.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 2037)
Buried in the sand during the day, emerging at dusk and remain active until just before dawn (Ref. 10809). Field observation showed that the electric organ discharge (EOD) rate of this species start rising just before sunset, increasing to over 2-folds just after dark when the fish comes out of the sand, and decreasing when the fish returns to the sand well before dawn. Experimental studies suggest internal control of this cyclic behavior (Ref. 10810). There is evidence of fractional spawning; fecundity count was 65 eggs (Ref. 10644).
埋藏在砂中在白天期間了, 在薄暮出現與保持活躍直到就在破曉之前.(參考文獻 10809) 野外採集觀察顯示發電器放電 (EOD) 這種的率開始就在日落之前升起,增加到超過 2-黃昏以後正好摺疊當當魚回到的時候，魚從沙子中出來, 而且漸減的時候沙子在破曉正前方。 實驗的研究意味著這循環的行為的內在控制。 (參考文獻 10810) 有對於少量產卵的證據; 孕卵數是 65個卵。 (參考文獻 10644)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 上面的 Mamore 與奧里諾科河到阿根廷流域.(參考文獻 9086)
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)
無危 (LC) ; Date assessed: 18 November 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00263 (0.00101 - 0.00685), b=3.05 (2.82 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
