(Portland, OR) -- The Oregon Zoo is working to save the Mazama newt. The small amphibian is only found at Crater Lake and was historically a top aquatic predator in the lake. Now, it's threatened by invasive signal crayfish. In 2008, the Mazama newt was found at half of survey sites. In 2025, they were only found at two sites. Crayfish are now found at all sites. The zoo has taken 19 newts and placed them in a special habitat where they'll breed, and their offspring will be released into the lake. Work on a long-term solution to the crayfish is also underway.