I’ll stick with sea monkeys, thank you very much.
I’ve had freshwater mussels, freshwater shrimp, and crayfish in my 100-gallon tank. When a crayfish molts. you’ll think you’ve got two crayfish!
Crayfish will nibble at the base of your plants, trimming them down to a nub.
Shrimp will jump out, as they are too easily spooked by any fish.