分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (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
生態學
; 淡水 底中水層性.
South America: Rio Tocantins drainage.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 91049); 3.4 cm SL (female)
簡短描述
型態特徵 | 形態測量圖
背的軟條 (總數): 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 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
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俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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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).
營養階層 (Ref.
69278): 2.6 ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
