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Gila nigrescens (Girard, 1856)

Chihuahua chub
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Gila nigrescens
Picture by Gratwicke, B.

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

Teleostei > Cypriniformes (Carps) > Leuciscidae (Minnows) > Laviniinae
Etymology: Gila: A river flowing from SW Mejico to south Arizona.
More on author: Girard.

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

; 淡水 底中水层性. 亞熱帶的; 33°N - 30°N

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

North America: Mimbres River in New Mexico, USA; Lagunas Guzman and Bustillos, Chihuahua in Mexico.
北美洲: 美國新墨西哥州的 Mimbres 河以及在 Lagunas Guzman 與 Bustillos, 在墨西哥的奇瓦瓦。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 24.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 86798)

简单描述 检索表 | 型态特徵 | 形态测量图

背的软条 (总数) : 9; 臀鳍软条: 8. Gila nigrescens can be distinguished by the following characters: lateral line with 67-78 scales; dorsal fin with 9 rays; anal fin with 8 rays; 1st gill arch with 9014 rakers; pharyngeal teeth 2,5-4,2; deep, compressed body; long, fairly slender caudal peduncle; terminal mouth on rounded snout; olive-gray above; silver side; clear to slate gray fins; and breeding individuals with red-orange mouth and paired and anal-fin bases (Ref. 86798).

生物学特性     字汇 (例如 epibenthic)

Inhabits flowing pools of creeks and small rivers, usually near brush or other cover (Ref. 86798).

栖息于小溪与小河的流动的潭水, 通常在灌木或其他的表面附近。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

北美洲: 美國新墨西哥州的 Mimbres 河以及在 Lagunas Guzman 與 Bustillos, 在墨西哥的奇瓦瓦。

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

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

世界自然保护联盟红皮书 (Ref. 130435)

  次级保育类动物, 见 IUCN 红皮书 (VU) (B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)); Date assessed: 28 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

更多信息

Trophic ecology
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网络资源

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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=0.01148 (0.00455 - 0.02896), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  2.2   ±0.2 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (14 of 100).