分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: Trigonectes: Greek, trygon = a sting ray + Greek, nekton = swimmer (Ref. 45335); rubromarginatus: From the Latin ruber (red) and marginatus (with margin), referring to the red stripe along the ventral margin of the caudal fin (Ref. 26656).
More on author: Costa.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; 非迁移的. 熱帶; 23°C - 27°C (Ref. 13614)
South America: Araguaia River basin, Brazil.
南美洲: Araguaia 河流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 12.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 27139)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 10 - 14; 臀鳍软条: 16 - 18. Distinguished from other species of the genus, except T. strigabundus, by having straight mouth cleft. Differs from T. strigabundus and all other species of the genus by the elongated pelvic fin of the males, whose tip is reaching to the base of 11th to 15th anal rays and the presence of a bright red stripe along the ventral margin of the male caudal fin. Seems to differ from T. strigabundus by having a larger size (Ref. 26656).
与其他种的本属区分了, 除 T. strigabundus, 借着具有直的嘴裂缝。 有别于 T. strigabundus 与所有的其他种的本属藉由延长雄性的腹鳍, , 顶端正在延伸到第 11 到第 15个臀鳍鳍条的基底与那有一条鲜红色斑纹沿着雄鱼尾鳍的下缘。 似乎藉由有一个不同于 T. strigabundus 较大。 (参考文献 26656)
Bottom spawner, 8 months incubation (Ref. 27139).
底部产卵鱼， 8 个月孵育时间。 (参考文献 27139)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Araguaia 河流域。
Costa, W.J.E.M., 1990. Systematics and distribution of the neotropical annual fish genus Trigonectes (Cyprinodontiformes, Rivulidae), with description of two new species. Ichthyol. Explor. Freshwat. 1(2):135-150. (Ref. 26656)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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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=0.00977 (0.00315 - 0.03034), b=3.03 (2.77 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.4 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 (10 of 100).
