Actually, it's not for me. I wouldn't keep goldfish personally, unless I had a good-sized pond. No, the problem is actually a coworker's.
One of my bosses has a largish (between 50 and 75 gallon) aquarium in his office. A month or so ago, a secretary brought in a very small goldfish that her visiting granddaughter had won in a local fair and put it in the tank.
There is a lace catfish in the tank.
There wasn't a baby goldfish for very long.
A couple of days ago, the granddaughter called and was told that the fish was alive and well and getting bigger every day. Now granddaughter is coming up for a visit sometime and wants to see for herself. Sooooo, they want to get a less edible replacement. So I was hoping to get something that would stay a bit smaller than, say, a koi. As I'm not a big goldfish person, I'm really not familiar with varieties.
Thanks for the help!