Colombians are very cool/pretty fish! I have never had either the Columbian or Blue, but every one I have asked about the blue says they can be nasty, depending on the size of the tank.
wicca27, That is a FREAKIN BEAUTIFUL AWESOME group of Colombians you have there!!!! I have been wanting to get a group of 8-10, but NONE of the fish stores, even the big box stores, get in any number of them at one time! Most only get in 2 or 3 and then 1 will almost always kill of the other 2! GRRRRRRR So hopefully one of these days I will find a good size group to buy!