Oregon wildlife managers are racing to eliminate an invasive species of minnow after one specimen was found in a southern Oregon lake.

A single tui chub was found in Diamond Lake in October. Oregonian officials have dealt with the tui chubs before. Populations of the invasive species exploded after being introduced to the lake sometime after 1954 by an angler baiting for bigger fish. By 2006, the population had swelled to some 90 million tui chubs. The rainbow trout fishery collapsed and water quality deteriorated, resulting in toxic algae blooms that closed the lake to swimming for portions of the summers of 2001, 2002, and 2003, according to the Oregon Department of Fish and Wildlife (ODFW).