This is a video of live feeding of a preditor fish. I had piranha and fed them live and dead fish. Feeding live fish or other animal that needs to be bit in more then once occasionally a half eaten casulty like like the frog lives a bit longer then if a snake constricts it . Animals all have thier own ways to eat small bites are just what this type of fish does. In the wild the fish wouldn't be going oh cute frog I can't eat you. Nope they just eat them. People need to relax slightly. My corn just ate a pinky alive w/o killing it first and it cried all the way down!