Tiny fish cleans abandoned pools at foreclosed houses

While lawmakers in Washington struggle to solve the nation's foreclosure crisis, officials here are using a small fish to clean up some of the mess.

The Gambusia affinis is commonly known as the "mosquito fish" because of its healthy appetite for the larvae of the irritating and disease-spreading insects. Lately, the fish is being pressed into service in California, Arizona, Florida and other areas struggling with a soaring number of foreclosures.

The problem: swimming pools of abandoned homes have turned into mosquito breeding grounds.

"They are real heroes," says Josefa Cabada, a technician at the Contra Costa Mosquito & Vector Control District, a government agency. "I've never seen a mosquito in a pool with mosquito fish."

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