The owner of the fish store I go to overheard me talking about my native tank. He told me he was getting in a small sturgeon species. They are usually bred to make caviar. He said max size is a foot or a foot and a half. If it's true I could fit it in one of my future tanks. Anybody keep these? I'm considering buying one. He said they look exactly like sturgeon because they are but they don't get giant. Is this a real thing?