I have 9 red bellies, they are about 3 inch's long. I have been feeding them bloodworms, brine shrimp, superworms, guppies, and tropical flakes. Last night I dropped a pinkie mouse in there and it was gone in less then 15 sec's. Today I stepped it up and bought some fuzzy mice and a hopper mouse. My question is, at 2-3 inch is the bone and fur from a mouse okay for the pirahnas digestive system? Any thought's or comments would be very helpful, thanks in advance.