分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); onca: Name from Portuguese 'onca', referring to the jaguar Panthera onca (Linnaeus), alluding to the black spots in a bright gold-yellow body; noun in apposition (Ref. 123789).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Brazil.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 4.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 123789)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 8 - 10; 臀鳍软条: 6; 脊椎骨: 35 - 36. This species is distinguished from its congeners by the following characters: presence of small dots on the side of the body, arranged in two or three distinct longitudinal lines; short pectoral fin, not reaching the vertical that passes through the origin of the dorsal fin; absence of adipose fin and bars; scaled isthmus; absence of blotches on dorsum; presence of longitudinal gold stripe; and mouth small, terminal. Colouration: yellow to brownish with dorsum darker and whitish belly, with gold tint on opercle, eye and parts of the head (123789).
This species has restricted geographic distribution, currently known only from córrego Taquara and its tributaries. Maximum length based on type specimen, to be replaced with a better reference (Ref. 123789).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Melo, M.R.S., M.C.L. Brito Ribeiro and F.C.T. Lima, 2021. A new, narrowly distributed, and critically endangered species of Characidium (Characiformes: Crenuchidae) from the Distrito Federal, Central Brazil. Neotrop. Ichthyol. 19(1). (Ref. 123789)
世界自然保护联盟红皮书 (Ref. 130435)
极度濒危 (CR) (B1ab(iii)); Date assessed: 08 April 2021
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
营养阶层 (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
