Distichodus nefasch

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相关物种
- 物种在
  Distichodus
- 物种在
  Distichodontidae
- - 分类 -
- Distichodontidae
- Characiformes
- Teleostei
- Chordata
- Animalia

Distichodus nefasch (Bonnaterre, 1788)

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drawing shows typical species in Distichodontidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Distichodus: Greek, di = two + Greek, stix, stichos = line, row (Ref. 45335).
More on author: Bonnaterre.

Issue
See explanation of name change from Distichodus niloticus (Hasselquist, 1762) in Eschmeyer (CofF ver. Oct. 2012: Ref. 92135) according to Fricke (2008: Ref. 83466).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水大洋性. 熱帶

分布国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Africa: Lake Albert (Ref. 4903, 49805), Lakes Turkana and No, Murchison Nile (Ref. 4903), White and Blue Nile, and the Chad basin where it is uncommon (Ref. 7094).
非洲: 白色與藍色的尼羅河，特坎那湖, 包括查德流域在那裡它是稀有的。

大小 / 重量 / 年龄

Maturity: L_m ? range ? - ? cm
Max length : 83.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 7094); 最大体重: 6.2 kg (Ref. 7094)

简单描述检索表 | 型态特徵 | 形态测量图

背的软条 (总数) : 22 - 26; 臀鳍软条: 13 - 15. Diagnosis: depth of body 2.5-3.5 times in standard length, length of head 3 (in young fishes) to 5 times (in adults) (Ref. 4903). Snout not elongated (Ref. 28714), rounded (Ref. 4903), not or slightly projecting beyond the mouth (Ref. 4903, 28714). Maxilla extending to below the nostrils; upper surface of the head, and the operculum ridged with low, radiating striations (Ref. 4903). Teeth all small and bicuspidate (Ref. 28714), in two series, outer with 24-36 teeth (Ref. 4903). Dorsal fin with 22-26 rays, the first 3-6 unbranched (Ref. 4903). Adipose fin covered with small scales (Ref. 4903, 28714), small, its basal length about 2-4 times its distance from the posterior margin of the dorsal fin (Ref. 28714). Anal fin with 13-15 rays, the first 3-4 unbranched; caudal fin forked, its rounded lobes almost entirely scaled; lateral line with 90-110 scales (Ref. 4903). 18-21 scales between lateral line and dorsal-fin origin (Ref. 4903, 28714). 15-18 scales between insertion of pelvic fin and lateral line (Ref. 4903). Large robust fish as adults (Ref. 28714). Coloration: purplish-silver above, silver below; young fishes with several vertical dark bars on the flank (Ref. 4903).

In Lake Albert found in the shallow inshore waters, especially in the region of deltas; also in rivers (Ref. 4903). Macro-herbivore, feeds on submerged water plants (Ref. 4903, 28714), Eichornia roots and periphyton (Ref. 28714), but also molluscs and small Crustacea (Ref. 4903). Oviparous (Ref. 205).

大型草食动物, 吃水下的水中植物， Eichornia 根与固着生物。 (参考文献 28714) 卵生的.(参考文献 205)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼

Oviparous (Ref. 205). Distinct pairing occurs (Ref. 205). Males lingering near the nesting site deemed as the closest thing to parental care (Ref. 205).非洲: 白色與藍色的尼羅河，特坎那湖, 包括查德流域在那裡它是稀有的。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Daget, J. and J.-P. Gosse, 1984. Distichodontidae. p. 184-211. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 7094)

世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)

次级保育类动物, 见 IUCN 红皮书 (VU) (A2bcd+3cd); Date assessed: 12 April 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

无害处的

人类利用

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

营养阶层 (Ref. 69278): 2.0 ±0.00 se; based on food items.

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (53 of 100).

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