分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes) >
Rhamphichthyidae (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
生态学
; 淡水 底中水层性. 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 45.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 35403)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 背的软条 (总数) : 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).
泳鳔当成鱼时缩小成一个小的狭窄管状的身体通常厚壁的; 斜的横向深色的横带背面中断 , 不横越或者达到箭头形的线,被扩大的这些横带的最上层与小镰刀的形式相似。 臀鳍棘条 308-417; 没有尾鳍.(参考文献 30543)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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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).
营养阶层 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
