I've had an ADF (African Dwarf Frog) for about 7 months. The pet store said they will eat fish food flakes, but i have not once seen him do this. He hasn't died, so i assume he's getting his food from somewhere. I got a new ADF yesterday to keep my old one company, and i want to make sure they don't die or anything. What exactly should i feed them? Can you reccommend a particular brand or type of food? Thanks.