[James]

Haha Jim, I was just going to suggest the crayfish, May I suggest the type of it?
I'd like to see the unique Blue Crayfish(usually Red or Beown Crayfish are very common), Blue Crayfhis looks just very unique of its color and yet it is a genetic oddity of the common brown crayfish.
some pix of it




and what about some Freshwater Snails?


And with a "Snail allow on glass" toggel in the setting panel...