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); travassosi: Named for Haroldo Travassos, deceased Brazilian ichthyologist, in recognition to the contributions he made for the taxonomy of the genus Characidium (Ref. 128858).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性.
South America: Brazil.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 128858)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
脊椎骨: 35 - 37. This species can be distinguished from its congeners by having naked isthmus (except C. helmeri) with 15-18 principal caudal-fin rays (vs. 19 princial caudal-fin rays) and 10-12 total pectoral-fin rays (vs. 13 or more total pectoral-fin rays). It differs from C. helmeri by the following set of characters: having a slender body; tip of pectoral fin not reaching origin of pelvic fin; tip of pelvic fin not reaching beyond anus, presence of well developed supraorbital; vertically elongated dashes on sides of body absent; and higher number of pored lateral-line scales (Ref. 128858).
Found in small cold-water creeks or highland streams (Ref. 128858).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Melo, M.R.S., P.A. Buckup and O.T. Oyakawa, 2016. A new species of Characidium Reinhardt, 1867 (Characiformes: Crenuchidae) endemic to the Atlantic forest in Paraná State ,southern Brazil. Neotrop. Ichthyol. 14(3):e160014 (Ref. 128858)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 02 November 2020
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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].
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).
