UV lights used to zap Lake Tahoe’s invasive plants, home to human-introduced giant goldfish

Amy Alonzo at Reno Gazette Journal reports Lake Tahoe’s famously clear blue water is under attack from a common household plant – Eurasian watermilfoil and curlyleaf pondweed, two plants found in many household fish tanks. After years of ineffectively battling the plants — which provide breeding grounds for invasive fish including what have morphed into extremely over-sized goldfish — preservation groups,…