One of the tanks I am working on and intend to post pictures of when I can get some good ones is my “cold water” no filter walstd tank. I designed it specifically for a community of dwarf crayfish to live alongside Rosy Red Minnows and zebra danios. Thought you guys would appreciate a better picture of one of these crayfish who is in good health.

Here are some additional behaviors of these guys interacting

Picture of mating:

Pictures in the tank