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: Rhamphichthys: Greek, rhamphos = bill, peak + Greek, ichthys = fish (Ref. 45335); drepanium: drepanium to refer to the sickle-shaped pattern of the upper part of the oblique transversal dark bars of the body (Ref. 35403).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Amazon, and Orinoco basins.
南美洲: 亞馬遜河 , 與奧里諾科河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 45.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 35403)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 0. Swim-bladder in adults reduced to a small narrow tube-like body generally thick-walled; oblique transversal dark bars interrupted dorsally, not crossing or reaching the sagittal line, the upper extremities of these bars being widened resembling the form of a small sickle. Anal fin rays 308-417; no caudal fin (Ref. 30543).
泳鰾當成魚時縮小成一個小的狹窄管狀的身體通常厚壁的; 斜的橫向深色的橫帶背面中斷 , 不橫越或者達到箭頭形的線,被擴大的這些橫帶的最上層與小鐮刀的形式相似。 臀鰭棘條 308-417; 沒有尾鰭.(參考文獻 30543)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 亞馬遜河 , 與奧里諾科河流域。
Triques, M.L., 1999. Three new species of Rhamphichthys Müller et Troschel, 1846 (Ostariophysi: Gymnnotiformes: Rhamphichthyidae). Rev. Fr. Aquariol. 26(1-2):1-6. (Ref. 35403)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 23 November 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [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): Moderate vulnerability (42 of 100).
