Thousands of non-native goldfish invade Colorado lake

Reuters: A handful of goldfish dumped into a Colorado lake, evidently by a pet owner years ago, have reproduced and thousands of the non-native fish now threaten indigenous aquatic species, state wildlife officials said on Friday. Rangers in Boulder County last month detected teeming schools of the goldfish in a semi-rural lake, Colorado Parks and Wildlife spokeswoman Jennifer Churchill said. The pet fish, a form of carp not native to North America, now number between 3,000 and 4,000 and state biologists......

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