LAKE TAHOE, Calif. (KRNV & MyNews4.com) -- Researchers are concerned a common household pet may turn into a new threat to the ecology of Lake Tahoe.
Biologists with the University of Nevada, Reno say they're finding a growing number of giant goldfish in the lake.
They are concerned because goldfish eat smaller fish and excrete "lots of nutrients." Researchers say those nutrients stimulate algae growth.
It's not clear how the goldfish got into Lake Tahoe, but it's believed to be from people dumping aquariums into the lake.