My boyfriend and I went to a large creek a few days ago and caught a baby flathead catfish. We took it home and now have an aquarium set up for it, but we are having trouble finding something that it will eat. It's no more then half an inch long. We've read that they will eat algea, shrimp pellets, small bugs and small fish, but so far it hasn't taken to anything we have been giving it (we havent tried small fish yet because petsmart doesn't carry any that are small enough). Any suggestions?