分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Serrasalminae
Etymology: Serrasalmus: Latin, serran, serranus, saw and a fish of genus Serranus + Latin, salmo = salmon (Ref. 45335).
More on author: Valenciennes.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Paraguay-Paraná River basin.
南美洲: 巴拉圭- 巴拉納河的流域。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 12.2 range ? - ? cm
Max length : 27.1 cm TL 雄鱼/尚未辨别雌雄; (Ref. 115169); 32.4 cm TL (female); 最大体重: 440.00 g (Ref. 115169); 最大体重: 440.00 g
Feeds mainly during the daytime, though some large fish (15-20 cm SL) extend their foraging activity to dusk (about 1800-1900H). Night is spent sheltered among vegetation. Small-sized to medium-sized fish (7-10 cm) are solitary and patrol feeding territories (3-4 square m.) in a way similar to that reported for the scale-eating Catoprion mento. Stalking with some use of plant cover is a frequent mode of hunting employed by S. marginatus. It approaches its prey with a slow, stealthy movement from behind or below. It strikes its prey on the tail or anal fin, of which a piece is clipped out with a jerking motion of the body. This clipping is audible underwater. Lurking is also employed during daytime (Ref. 9080).
主要在白天期间觅食, 虽然一些大的鱼 (15-20 公分 SL) 把他们的觅食活动延伸到薄暮。 (大约 18001900H 的) 夜晚被花费在植物之中隐匿。 小型到中等大小的鱼 (7-10 公分) 是独居性的而且巡逻摄食领域 (3-4 平方公尺.) 在一定程度上类似以为吃鳞片的 下锯脂鲤［Catoprion mento］ 报告。 悄悄靠近有一些植物表面的使用是被 S. marginatus 利用的一个猎食的常用方式. 它从后面或下面接近它的猎物缓慢地又秘密的运动。 它攻击猎物的尾部或者臀鳍, 其中块被修剪出具有一个痉挛身体的运动。 这一个剪断是听得见的在水中的。 潜藏也被利用在白天期间。 (参考文献 9080)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 巴拉圭- 巴拉納河的流域。
Jégu, M., 2003. Serrasalminae (Pacus and piranhas). p. 182-196. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 39031)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
最不相关 (LC) (Least Concern); Date assessed: 22 December 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.01068 - 0.01627), b=3.16 (3.11 - 3.21), in cm total length, based on LWR estimates for this species (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.56 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (22 of 100).
