If you want to establish a crayfish population I would collect crayfish from a lake or pond, not a creek. Crayfish from a lake are more likely to survive in your pond than crayfish from a creek. There are hundreds of diffrent species of crayfish. Some like in ditches with no fish, some like in small streams, some like rocks, some like mud. Find a lake that is similar to yours, set a crayfish trap overnight and throw what you catch into your pond. That is your best bet. I would try to avoid papershells and other burrowing crayfish. They don't give a bass much chance of eating them.
