I am pretty positive the answer is no, but I was wondering about how long they could stay together.
I got myself a Dragon blood peacock cichlid as graduation present the other day, and put him in a 60g. breeder with a convict.
They both are about the same size... 3-4in... and so far they have been getting along. My convict isn't very aggressive. My main concern was that they need different water hardness or something.
I would prefer to get another tank just for the new fish, but my mother is determined not to allow that as the electric-bill was "too high" last month.