I have two pet tilapia. They are interesting fish.... one is a Tiger Tilapia, (butterkofferi) and one is a common tilapia that is commonly farmed as food. He came in at a local shop as a tiny baby the size of my pinky nail with some feeder guppies. Nobody knew what he was, so Jim gave him to me to raise. He is now well on his way to being a foot long monster!!! I have thought to myself... what if I chopped you up and fed you to my snakes? That'll teach you to nibble my fingers!!!