Reply To: Tank suggestions? Welcome to the website! › Forums › The Celestial Pearl Danio › Habitat › Tank suggestions? › Reply To: Tank suggestions? June 28, 2007 at 1:26 am #11511 CrazedpufferParticipant Oh cool. About how old should they be before they are able to get sexed? Mine still don’t have any colors close to pics I’ve seen. I think mine are still only about 9 weeks old.