Northwest Environmental News Environmental Update: Crayfish By Sage Van Wing Published December 8, 2015 at 3:24 PM PST Facebook Twitter LinkedIn Email We check in with EarthFix reporter Jes Burns about how crayfish introduced to Crater Lake to feed sport fish are now competing with native newts. GUESTS: Copyright 2020 EarthFix. To see more, visit . Katie Campbell, KCTS9/EarthFix / Crayfish have been trapped in Crater Lake as deep as 750 feet, the deepest known crayfish in any lake system.