Well, if u think about it, eating freshwater food is kinda odd, ya know? The animals are of a different balance, and not what the lions would have eatne. It's bad for their liver anyway. If you feed frozen, every now and then you can buy them a small cromis or sumthing like that for them to eat. Maybe even live shiners. If you absolutely HAVE to feed live, feed it tetras, cuz they are much cleaner than guppies/ goldfish. Tetras are cheap, and you could prob feed it those.