分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Beloniformes (Needle fishes)
頜針魚目 (Needle fishes) >
Belonidae (Needlefishes)
頜針魚科 (Needlefishes)
Etymology: Potamorrhaphis: Greek, potamos = river + Greek, rhaphis = needle (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性; 深度上下限 0 - ? m. 熱帶; 23°C - 26°C (Ref. 2059)
South America: Amazon and Orinoco River basins, and the Guianas.
南美洲: 亞馬遜河流域，奧里諾科河河, 與圭亞那。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 29.1 cm TL 雄鱼/尚未辨别雌雄; (Ref. 40653); common length : 12.3 cm OT 雄鱼/尚未辨别雌雄; (Ref. 10994)
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) : 29 - 36; 臀棘: 0; 臀鳍软条: 25 - 32; 脊椎骨: 68 - 78. Predorsal scales 85-135, mean 110.3 (Ref. 10994, Table 7).
前背的鳞片 85-135, 意谓 110.3.(参考文献 10994, 表 7)
Forms schools at the surface. Prefers to inhabit marshes, small slow-moving creeks or even in main river beds, in the slowest parts of meandering streams next to banks (Ref. 35237). Voracious carnivore which appears to have a primarily nocturnal habit (Ref. 27188). During reproduction, the male positions itself beside the female or crosswise in front of her. Sometimes the male touches the female with his side, pushing her aside in an oblique position, with their heads oriented downwards. The couple settles next to a bush where the female spawns her eggs (15 to 40). Eggs adhere to plants by means of sticky filaments which are 2 to 3 mm long. At 27-30°C, incubation lasts for 9 to 10 days. Larvae are pelagic and carnivorous (Ref. 35237). Maximum length 40 cm TL in Keith et al., 2000 (Ref. 35237).
形成鱼群在水表面。 偏爱居住于湿地, 小的缓慢移动的小溪或者甚至在主要的河床, 在曲折溪流的最慢部份中紧邻着岸.(参考文献 35237) 狼吞虎咽的食肉动物那似乎有一个主要夜行的习惯。 (参考文献 27188) 在繁殖的时候，雄鱼置身于母鱼旁边或斜地在她之前。 有时雄鱼以他的身边,在一个斜的位置中推动她的旁边, 接触雌鱼与他们的头部朝向下面。 一对定居紧邻着母鱼产下卵的矮树丛.(15 到 40) 卵经由黏黏的丝状突起黏附在植物那是 2 到 3 mm 长。 在 27-30 °C ，孵育持续达 9 到 10 天。 仔鱼是大洋性与肉食性的。 (参考文献 35237) 在 Keith 等人的最大长度 40 公分TL。,2000.(参考文献 35237)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
The eggs are attached to underwater vegetation. At 27-30 deg. Celsius the larvae hatch after 9 - 10 days. The larvae are pelagic carnivores.南美洲: 亞馬遜河流域，奧里諾科河河, 與圭亞那。
Collette, B.B., 1982. South American freshwater needlefishes of the genus Potamorrhaphis (Beloniformes: Belonidae). Proc. Biol. Soc. Wash. 95(4):714-747. (Ref. 10994)
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 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00057 - 0.00279), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
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 (19 of 100).
