First image - Art Creations Friday

Can someone tell me how a smaller orange-colored fish got the name Goldfish? LOL Are there some that are actually gold in color? I was just wondering about that since I've never seen a gold one.

Here is my first image using the background for Art Creations Friday. I have four more that I'm currently working on and hope to finish by late this evening. I'll post as soon as I can. Hopefully, this will help to satisfy just a small amount of your curiousity! ; )