分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); nana: Named for Mariana Barreira Mendonça, the first author’s sister, known by her family and friends as 'Naná'. A noun in apposition.
Eponymy: Mariana Barreira Mendonça is the senior author’s sister. [...] (Ref. 128868), visit book page.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性.
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Rio Xingu drainage and Rio Tapajós drainage in Brazil.
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 2.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 104905)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11 - 12; 臀鰭軟條: 8 - 10; 脊椎骨: 32 - 33. Characidium nana is diagnosed from all other species of Characidium, except C. bahiense, C. interruptum, C. laterale, C. mirim, C. nupelia, C. rachovii, C. stigmosum, and C. xavante by having short, incomplete lateral line, the lack of the inner dentary series of teeth, and the absence of the parietal branch of the supraorbital laterosensory canal. It differs from C. bahiense, C. interruptum, C. laterale and C. rachvoii by the absence of the adipose fin (vs. presence of adipose fin); from Characidium mirim and C. stigmosum by having a conspicuous dark blotch onto the caudal peduncle (vs. absence of caudal blotch); and from C. nupelia and C. xavante by possessing a broad, conspicuous dark midlateral stripe (vs. narrow, inconspicuous midlateral stripe). It is further distinguished from C. xavante by having 12 circumpeduncular scales (vs. 10) (Ref. 104905).
Body shape (shape guide): fusiform / normal.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Mendonça, M.B. and A.L. Netto-Ferreira, 2015. New species of Characidium (Characiformes: Crenuchidae) from the Rio Tapajós and Rio Xingu drainages, Pará, Brazil. Zootaxa 4021(1):187-194. (Ref. 104905)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
人類使用
工具
特別的報告
下載 XML
網路資源
基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
3.2 ±0.3 se; based on size and trophs of closest relatives |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |