分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Cheirodontinae
Etymology: pristis: From the Greek prister, meaning saw, in reference to the projected ventral procurrent caudal-fin rays along the ventral margin of the caudal peduncle..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Rio Tocantins drainage.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 91049); 3.4 cm SL (female)
简单描述
型态特徵 | 形态测量图
背的软条 (总数): 11. Can be diagnosed from other species of the Cheirodontinae other than those in the Cheirodontini by having 16-19 ventral procurrent caudal-fin rays and anterior ventral procurrent caudal-fin rays of males projected through the muscles and skin and forming a keel along ventral margin of caudal peduncle. Differs from other species of the Cheirodontini by possessing the following characters: first through fourth or fifth branched anal-fin rays of mature males being slab-shaped and more expanded in the sagittal plane than the remaining anal-fin rays or the comparable rays in females and immature; the anterior expansion of the base of the proximal lepidotrichia in the slab-shaped anal-fin rays; presence of a large ligament attached to an anterior expansion of the proximal segment of the lepidotrichia and to the posterior face of the proximal segment of the lepidotrichia of the following expanded anal-fin ray; presence of well-developed hooks only on the slab-shaped anal-fin rays; and arrangement of the anal-fin hooks which are bilaterally asymmetrical and unpaired relative to the contra-lateral segments of the lepidotrichia. Distinguished from all members of the Cheirodontini by the sagittal expansion of anal-fin rays being restricted to the first 4 or 5 branched rays, presence of 1 to 3 hooks in each contra-lateral segment of lepidotrichia; complete lateral line; and conical distal tip of the ventral procurrent caudal-fin rays in adult males (Ref. 91049).
Occurs in clear water over a sand and gravel bottom with a slow current and no vegetation (Ref. 91049).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Malabarba, L.R. and F.C. Jerep, 2012. A new genus and species of cheirodontine fish from South America (Teleostei: Characidae). Copeia 2012(2):243-250. (Ref. 91049)
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01380 (0.00540 - 0.03529), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.6 ±0.5 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).
