Fish biologists say as many as 100,000 trout, bass and catfish have died the past month in the Sparks Marina along Interstate 80.
Nevada Department of Wildlife spokesman Chris Healy says low oxygen levels killed about 3,000 fish in one corner of the 77-acre lake in mid-December but they thought the event was localized and of limited impact.
Since then, they've been unable to detect any live fish.
Biologists say a cold-snap could have stirred up oxygen-poor waters but they don't understand yet what caused the massive die-off.
(AP) - A group opposed to Nevada's new Education Savings Account program says it shouldn't have to post a quarter-million-dollar bond to cover the costs of putting the program on hold.
(AP) - Nevada is declaring its teacher shortage as an emergency, a move that allows vacancy-filled schools to hire teachers from out of state who aren't yet licensed locally.
(AP) - Electric carmaker Tesla's Nevada battery plant is creating jobs more slowly than first projected, although state officials say it's still making satisfactory progress.
(AP) - NV Energy is proposing "grandfathering" existing rooftop solar customers into lower rates if they installed their system or applied for one by Sept. 10, 2015.
(AP) - Unemployment rates are ticking down in Nevada's three main metropolitan areas.