Comment by Peter on October 15, 2013 at 12:17am

3-4 is about right and u can keep them together with angelfish but discus prefer higher temps and if u have angels ull have to get discus accordingly. As in get less discus. The only real problem is if u get a angel pair or discus pair because they will harrass all the other fish. Ive read a discus pair can harras fish to the point of death. If u do get some theyr awsome fish and good luck

Comment by Robert Jango on October 15, 2013 at 2:56pm

Tank size is an important factor when determining the amount of fish to buy. But water quality is just as important. In perfect water you could probably fit 15 Discus comfortably in the 50. But please don't try this!!  I'm just trying to illustrate the importance of water quality - especially as it pertains to Discus.    

Peter's about right. Ultimately the fish will tell you if they're too crowded. For example, if they're sucking for air at the water's surface you've got too many fish (or your water is messed up).  And you'll definitely know whether or not they're getting along with the other inhabitants.

Comment by Uncle Phil on October 20, 2013 at 6:10am

I've never kept discus, so i really can't tell you much about them. I do not recommend you keep angels with discus. Angels can get way too stressed out in too warm of conditions, witch would be perfect for discus. So If you want to keep your water at a steady 85, your most likely going to stress your angels. that scenario wouldn't play out very well. lol

Comment by DePreston on November 30, 2013 at 10:34am

All I know about angel fish is that they are very aggressive, the few I had years ago would kill any new fish I put into the tank.  So no more angels, lots more other fish.

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