Agree. The "pair" must bond, as not every male/female will get along. This is best achieved by having several and letting the fish select their mates. Adding a second fish of the opposite gender, if you can ascertain this, may or may not work, so then you would have more problems. Under your present circumstances, if the store will accept the discus, it would be best. A discus alone for any length of time may have difficult accepting any tankmates down the road.
Byron.
I decided to check my LFS to see if they'll take Discus, and they said they would. But thats the second problem, they typically don't order Discus and the only tank with Discus they have contains only one Discus. I was thinking about adopting it, but they want $90 for a tiny 3 inch blue Discus.
I found a guy that will sell me Discus for $35 a piece, do you think if I got two of similarly sized it'd be okay?