分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Stevardiidae (Stevardiids) > Creagrutinae
Etymology: Creagrutus: Greek, kreagreytos, -os, -on = to tear, to rip up the flesh (Ref. 45335); yudja: Named after the Juruna indigenous people, self-named Yudjá (which means “keeper of the river”).
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的.
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Brazil.
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 3.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 122128)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 8; 臀鰭軟條: 7 - 9; 脊椎骨: 36. This species is distinguished from its congeners by the following set of characters: absence of infraorbital 6 (vs. present); differs from its congeners, except for C. cracentis, C. maxillaris, C. melanzonus, C. phasma, C. runa, C.veruina, by having a shallower body 13.7-19.2% (vs. > 20%); differs from C. cracentis, C. maxillaris, C. phasma, C. runa, C.veruina by having a lower number of perforated lateral line scales 34-36 (vs. > 37); differs from C. melanzonus by having a higher number of post-anal scales 4-6 (vs. 2) (Ref. 122128).
Cross section: oval.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Netto-Ferreira, A.L. and C.R. Moreira, 2018. New species of Creagrutus (Ostariophysi; Characiformes; Characidae) from the Rio Xingu drainage, Brazil. Zootaxa 4375(2):250-256. (Ref. 122128)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
瀕危 (EN) (B2ab(iii)); Date assessed: 23 November 2020
人類使用
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00401 - 0.01809), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.7 ±0.1 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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