So I got my prized fishy his own brand new aquarium. He is a (still small, about 3") pearlscale goldfish, and his tank is a lightly planted 55 gal. But now he looks so lonley in there, by himself. I really want to do the best things for him, but in the end, he just looks like he is bored to tears without other fish. He used to have his corys and his loaches. But I figured he is gonna be growing real soon (I hope), so it was time to put him in something bigger, and rethink some tankmates for him. I heard that corys could be a danger to him when he gets bigger (because he may attempt to eeat them), and I want something that will maybe swim around the middle area of the tank. What type of fish would you reccomend for the bottom also? Thanx