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Knodus geryi Lima, Britski & Machado, 2004

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drawing shows typical species in Characidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Characiformes (Characins) > Characidae (Characins; tetras) > Stevardiinae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335);  geryi: Named after Jacques Géry, in recognition of his enormous contribution to the knowledge of the characiform fishes..

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性. 热带

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

South America: rio do Peixe in the upper rio Paraguay basin, Brazil.
南美洲: rio 在上面的 rio 巴拉圭流域巴西中做 Peixe 。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 55831)

简单描述 检索表 | 型态特徵 | 形态测量图

背的软条 (总数) : 10; 臀鳍软条: 18 - 20; 脊椎骨: 38 - 39. Differs from all congeners and from all remaining characid fishes by having two symmetric, large dark blotches basally on caudal fin lobes (Ref. 55831).
有别于所有的同类而且从所有的剩余脂鲤科鱼类鱼在尾鳍叶上基部地借着具有二个对称又大的黑色斑块。 (参考文献 55831) 描述: 背鳍鳍条 ii,8; 臀鳍棘条 iii,15, 16 或 17; 胸鳍鳍条 i,11, 12 或 13; 腹鳍鳍条 i,7.(参考文献 55831)

生物学特性     字汇 (例如 epibenthic)

Inhabits small river with transparent waters, very channeled and relatively deep (> 2 m deep in some points), having both rapids and waterfalls (Ref. 55831). Feeds on vegetal matter and insects (Ref. 55831).

用透明的水域栖息于小的河, 非常水道与相当深的 (>2 公尺深在一些点), 有急流和瀑布.(参考文献 55831) 吃植物的事件与昆虫。 (参考文献 55831)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

南美洲: rio 在上面的 rio 巴拉圭流域巴西中做 Peixe 。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Lima, F.C.T., H.A. Britski and F.A. Machado, 2004. New Knodus (Ostariophysi: Characiformes: Characidae) from the upper Rio Paraguay basin, Brazil. Copeia 2004(3):577-582. (Ref. 55831)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

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Trophic ecology
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00436 - 0.01515), b=3.07 (2.91 - 3.23), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
营养阶层 (Ref. 69278):  3.2   ±0.40 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 (10 of 100).