分類 / Names
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); orientale: From the Latin orientalis, meaning of the East, in reference to the distribution of the species which is located eastward from C. occidentale..
More on authors: Buckup & Reis.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 亞熱帶的
South America: coastal basins of southern Brazil at western tributaries of Laguna dos Patos basin.
南美洲: 在 Laguna dos Patos 流域的支流西部的巴西南部的海岸流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 116915)
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 - 9. Dark spots on dorsal fin do not form a continuous band across rays; anal fin of males with small spots, without larger blotches on the anterior portion. Fourth or fifth ray of pectoral fin longest, not reaching or just reaching to pelvic-fin origin. Third fin ray of pelvic fin longest, reaching area between anal opening and anal fin origin or reaching anal fin origin (Ref. 27672).
在背鰭上的深色的斑點不形成一個橫過鰭條的連續的條紋; 臀鰭雄性有小的斑點, 沒有較大的斑塊在前部上。 胸鰭的第四或第五鰭條長的, 不達到或正好延伸到腹鰭起點。 腹鰭的第三鰭鰭條長的, 達到在肛門開口與臀鰭起源之間的區域或者達成臀鰭起源.(參考文獻 27672)
Most specimens examined were collected in small rivers or creeks with slow to moderate water current and mud, sand, and loose stones on the bottom (Ref. 27672).
調查的大多數的標本在底部上在小的河或小溪被緩慢到中等的水流與泥，沙子與鬆散的石頭收集。 (參考文獻 27672)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 在 Laguna dos Patos 流域的支流西部的巴西南部的海岸流域。
Buckup, P.A. and R.E. Reis, 1997. Characidiin genus Characidium (Teleostei, Characiformes) in Southern Brazil, with description of three new species. Copeia 1997(3):531-548. (Ref. 27672)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00539 - 0.01942), b=3.08 (2.92 - 3.24), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
