Posted: May 9, 2012 10:56 AM
GRAND CANYON - On May 13th, the National Park Service will translocate wild juvenile humpback chub to Havasu Creek. It will be the second of three planned experimental releases.
The humpback chub, an endangered fish species endemic to the Colorado River basin, is well adapted to natural conditions of the Colorado River including high turbidity and seasonally variable flows and temperatures. But human-caused changes to the Colorado River ecosystem, including the introduction of non-native fish species as well as dam-induced changes in flow and temperature, have caused serious declines in wild populations. Today the largest remaining population in the world is found near the confluence of the Colorado River and Little Colorado River in Grand Canyon.
The translocation of juvenile humpback chub to Colorado River tributaries is part of a native fish conservation program in Grand Canyon National Park.
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