I knew NOTHING about goldfish when I bought this fish at a pet store about 6 months ago. Just wanted a pretty little fish in a bowl on my desk. He's pretty, all right...and growing like a weed. The bowl has been replaced by a 25 gal
tank. Can anyone tell me what kind of goldfish he is and how big he's likely to get? Without including the fins, he's about 4 inches now.