Hello, I've inherited my grandmother's fish tank and I'm trying to figure out what kind of fish this is. It's maybe 7 inches long, and a shimmery gold/peach color with more reddish/orange color on fins. Thanks for your help! It's living with a silver dollar fish and a couple cat fish now. I believe I remember my grandmother saying that she couldn't add anything else to the tank because this thing would eat it, but I'm not positive.