I had 2 young ones from Rapps. Both grew to about 4.5-5" and then stopped eating and died. They died about a 6 weeks apart for no reason at all. I think my water was a little hard for them. There's a picture on this thread somewhere of them. Search it and you will see. They look basically like a green and get some red spots as they get older. I wasn't terribly impressed with them. Maybe they would have got more red if they had time to mature.