Snakes'n'fish,
The columbian is still less than a year old, but has grown considerably. We are looking for a male to try to mate her with. Also plan on getting a pair of brazilian rainbows soon.
DvSKiN,
The 2 will get along for a short while, but we have to keep a very close eye on them. They'll sit together for a while, but just like kids, they'll start to fight over a toy or something. We've had both for almost 2 years now. The cockatoo is by far the more intelligent of the 2. We have to keep a lock on all his cage doors.