2008-07-16_REVISION - C1982056 (2)

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and fir or lodgepole pine, and secondary habitat of aspen or Douglas-fir mixed with the primary habitat at elevations between 8,000 and 11,500 feet. Lynx also periodically traverse other forested and non-forested habitats including lower elevation woodlands and shrublands. Suitable or potentially suitable habitat that would support lynx, based on existing vegetation, does not exist on or adjacent to the permit area. Therefore, OSM has determined that TR-64 will "not affect" the continued existence of the Canada lynx. Colorado pikeminnow The Colorado pikeminnow (Ptychocheilus lucius) is a torpedo-shaped fish with an olive-green and gold back, silver sides and white belly. The Colorado pikeminnow thrives in swift flowing muddy rivers with quiet, warm backwaters and are primarily piscivorous, but smaller individuals also eat insects and other invertebrates. These fish spawn between late June and early September and when they are 5 to 6 years old and at least 16 inches long. Spawning occurs over riffle areas with gravel or cobble substrate. The eggs are randomly splayed onto the bottom, and usually hatch in less than one week. Humpback Chub The humpback chub (Gila cypha) is a streamlined minnow with a concave skull and a prominent nuchal hump at the occiput, the back end of head marked by a line separating scaleless and scaled portions of epidermis with a caudal peduncle thin but not long snout that overhangs upper lip and scales often minute or absent on keel. Adults are dark on top and light below and fins rarely have yellow-orange pigment near base. Adults are usually range from 12-16 inches long and weigh 3/a to 2 pounds. The humpback chub historically ranged in the mainstem Colorado River preferring slower eddies and pools downstream to below the Hoover Dam site, however, present populations are restricted to areas in, and upstream, of the Grand Canyon. Razorback Sucker The razorback sucker (Xyrauchen texanus) is brownish-green with a yellow to white-colored belly and has an abrupt, bony hump on its back shaped like an upside-down boat keel. Razorback suckers are found in deep, clear to turbid waters of large rivers and some reservoirs over mud, sand or gravel and like most suckers feeds on both plant and animal matter. Razorback suckers can spawn as early as age 3 or 4, when they are 14 or more inches long. Breeding males turn black up to the lateral line, with brilliant orange extending across the belly. Depending on water temperature, spawning can take place as early as November or as late as June. In the upper Colorado River basin, razorbacks typically spawn between mid-April and mid-June. Bonytail The bonytail (Gila elegans) is a highly streamlined fish, dark on top, light below, often very dark in clear waters and pale in turbid waters. Fins are dusky with yellow pigment near base, prefering eddies and pools, not swift currents. The bonytail has a concave skull arching into a