"RedForeman ©®" wrote in message
...
Not an expert, but I've heard that RDs and several others, need a certain
amount of space to feel secure, or safe... It could be that they are
growing, and are now to the point that 2 in the tank is too much, but you
didn't say what size tank they're in, so I can't be sure at all....


Please see previous response regarding size.


Last couple of thoughts would be, what else is in the tank, maybe you need
some dither fish, something to take the attention away from the aggressor,
maybe a school of smaller fish, but that is limited on tank space...

Jack Dempsy's, Convicts, Jaguars, Firemouths, Pacu, several algae eaters,
Jewels, Green Terrors .

Then
there is that theory of "Controlled Agression" using the 'over populated'
approach. Theory has it, if you put a bunch of aggressive cichlids in an
aquarium and enough that it's borderline overstocked, they lose interest
in
chasing one, because there are so many others, they literally lose track,
or
forget... they say fish have a 2-3 second memory, so again, YMMV....

I think that my tank is pretty over populated, and the aggressor has a
fantastic memory! He just doesn't forget .


I've never had RDs but Jack Dempseys were very similar in that, you could
start out with two, eventually, one will have to go, or you'll have to get
a
bigger tank....

I have two Jack Dempseys. One is about 6" in size, the other one is about
4". So far, they are doing very well together, and both are acting rather
peacefully.
But as you said, fish are fish and can not be changed, I suspect that the
day of the Dempseys is coming soon

Mariana