The California Department of Fish and Wildlife announced the discovery of an invasive species in Lake Tahoe. According to a CDFW release, divers monitoring the lake for aquatic invasive species detected New Zealand Mud Snails (Potamopyrgus antipodarum) off Lake Tahoe’s South Shore. … They were believed to have been introduced to western rives through shipments of live sportfish, but subsequent spread is likely due to recreational activities, CDFW officials said.