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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Laviniinae
Etymology: bicolor: Name from the Latin word 'vacca' meaning cow and 'ceps' meaning head, for the type locality; noun in apposition (Ref. 56397).
More on author: Girard.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 温带; 44°N - 35°N
North America: Columbia River drainage in Washington, Oregon and Idaho, south in Klamath and upper Pit River (Sacramento River drainage) and interior drainages of Nevada and California to Mohave River in south California, USA. Distinctive subspecies were recognized: Gila bicolor snyderi (protected) in Owens River, California; Gila bicolor mohavensis (protected) in Mojave River, California; Gila bicolor bicolor in Klamath River system in Oregon and California; Gila bicolor obesa, a stream and spring-inhabiting form; and G. bicolor pectinifer, a lake-inhabiting form, both in Lake Lahontan basin in Nevada.
北美洲: 华盛顿州的哥伦比亚河流域，奥勒冈州与爱达荷, 美国南方在克拉玛斯河语与上面的皮特河 (在萨克拉门托河河流域) 与内华达州与加州到美国南加州的摩哈维河的内部流域。 有明显的亚种，被如 双色骨尾鱼〔Gila bicolor〕 vaccaceps 的比尔与庞德 1980 世 (参考文献 56397) 描述的一个。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 45.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 86798)
背的软条 (总数) : 8; 臀鳍软条: 7 - 8. Siphateles bicolor can be distinguished by the following characters: lateral line with 41-64 scales; dorsal fin usually with 8 rays; anal fin with 7-8 rays; pharyngeal teeth 0,5-5,0; deep, compressed body; dorsal-fin origin over pelvic- fin origin; fairly deep caudal peduncle; small, rounded fins; small, terminal to slightly subterminal mouth; does not extend to eye; dusky olive to dark green above; brassy brown side, often mottled in adult; silver white to yellow below; clear to dusky olive fins; young with dusky stripe along side; large individuals may have yellow to copper fins with pink, red, or orange bases, red-orange lower side (Ref. 86798).
Inhabits lakes and quiet, vegetated, mud or sand-bottomed pools of headwaters, creeks and small to large rivers (Ref. 86798).
栖息于河川源头，小溪与小型到大型河川的湖与平静,长满植物的, 泥或砂质底水池。 明显的亚种: 在欧文河的 双色骨尾鱼［Gila bicolor］ snyderi(有遮蔽的), 加州; 在莫哈维沙漠河的 双色骨尾鱼［Gila bicolor］ mohavensis(有遮蔽的), 加州; 在奥勒冈州与加州的克拉玛斯河系统的 双色骨尾鱼［Gila bicolor］ bicolor; 双色骨尾鱼［Gila bicolor］ obesa, 一个水流与居住于春天的形式与 G. b。 pectinifer, 一个居住于湖的形式,在内华达州在湖拉昂坦湖流域中。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
北美洲: 华盛顿州的哥伦比亚河流域，奥勒冈州与爱达荷, 美国南方在克拉玛斯河语与上面的皮特河 (在萨克拉门托河河流域) 与内华达州与加州到美国南加州的摩哈维河的内部流域。 有明显的亚种，被如 双色骨尾鱼〔Gila bicolor〕 vaccaceps 的比尔与庞德 1980 世 (参考文献 56397) 描述的一个。
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)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00492 - 0.02938), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 2.0 ±0.2 se; based on size and trophs of closest relatives
Generation time: 5.8 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (K=0.19-0.33).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (49 of 100).
