My clown knife and aruwana will eat crawdads ive never been able to get a video of it but as soon as i do i will post it for sure cause it is quite the sight for an aruwana to swoop up a crawdad from the bottom of the tank, but see i tryed to give a friend of mines clown knife crawdads and their still in the bottom of the tank like 3 months later so mine eats them and feeders and nothing else ive tryed also, but i have no desire to stop feeding him feeders i love to watch them eat