aptom203 said:They are extremely territorial with their own kind, especially as they grow older, and big waste producers so your tank might be a little small for more than one. You might be OK if you have lots of hiding places along the bottom and are dilligent with water changes.
aptom203 said:I have also heard that if you get them as small juveniles and they grow up in the same tank they can tolerate each other even as adults. I have a pair and they squabble a bit over algae wafers but seem to have picked separate hiding spots they're happy with.