i think it's not a good idea to mix them together
u can put aro and discuss in the same tank cause from my exp arow not interesting a flat fish but stingray they eat everything they can trap
lucky to u
I have a more than 15" black aro, a 10" motoro and and a 2' SAL in a 130g. Last week I put a 1"-2" convict for them to eat. The convict is still there stealing food from the aro. I am considering adding discus now. I am not afraid of anybody eating them but I think the motoro might freak them out. He is just too active of a fish. Also the SAL is sometimes a bit too playful. The aro is the least of my worryies.
Hmm, I'll probably try it out first. I'll probably put them all at the same time so they might not eat each other. In the long run, if they're not compatible, just separate them.
i think it's not a good idea to mix them together