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CDOW Website NDIS Home

Wildlife Greenback Cutthroat Trout Page


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This photograph may be used for non-commercial purposes.  Please give credit to the photographer.
Photo by: John Woodling
 Greenback Cutthroat Trout
 Oncorhynchus clarkii stomias

Summary: Found in only a handful of headwater streams in the Arkansas and South Platte river drainages, the greenback cutthroat is the rarest of the three native varieties. All native cutthroats are adapted to cold, clear, oxygenated streams of moderate gradient. Overhanging branches, undercut banks and eddies behind rubble which provide feeding and resting stations are required habitat. Cutthroat are readily taken by bait or fly. A well-presented fly cast just ahead of a cutthroat in open water may well bring an impulsive, strike. Spots on greenbacks are larger than on the Colorado River variety. Greenbacks have the highest lateral line counts of the three varieties native to Colorado.

Status: CDOW WRIS Species, Federally Threatened, State Threatened






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