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| | greenback cutthroat trout page |
 | | The decline of the greenback is attributed to habitat loss, modification, water diversion, water pollution, sedimentation, and the introduction of nonnative fish. |
 | | However, the major factor in the decline of the greenback cutthroat trout was the introduction of nonnative salmonid species (rainbow trout, brook trout, brown trout, and Yellowstone cutthroat trout), within the South Platte and Arkansas River drainages. |
 | | Greenback cutthroat trout readily hybridize with rainbow trout and other subspecies of cutthroat, and are outcompeted by brook and brown trout. |
| www.r6.fws.gov /species/fish/greenback (527 words) |
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