Asian carps (bighead and silver carp) were collected with boat electrofishing over four years in three South Dakota tributaries to the Missouri River at the beginning of their invasion into this region. This paper documents their annual movement upstream into these tributaries and identifies differences in distribution by age-0, juvenile, and adults. By the end of this study in 2012, Asian carps dispersion was slowed or halted in these tributaries due to artificial and natural barriers. These records represent the northern most records of Asian carps in North America (46.931042, -98.708975).
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