Aimara loves to attack human, net, or other Aimara, but surprisingly, get along better with other fish, even with other species of Hoplias. Link below is a 27" Venezuela Aimara that had pygos and mouse for snack, yet live well with pacuBlimey do you think you might get a few more fish in there..LOL!! Nice fish by the way, now thats a predator tank!
Stocking levels such as this will ensure none of these fish will grow into monsters, also you have chosen your fish wisely which is good to see.The fish are all of equal size also within reason, heavy stocking also reduces aggression, generally the fish will sustain a few split fins etc but fatalities are rare in busy tanks like this. Give the fish room to establish terrritories and you will see differeces in the fishes disposition...aggression in often based on the situation they find themselves in.
I have found once the Wolf reaches 18"-24" inches they are far more likely to show aggression, I have been attacked many times during tank maintenance....they hit very hard when they do attack!
Love the big Endlicheri (Spelling).
http://www.monsterfishkeepers.com/f...-Hoplias-aimara-set-up-in-his-pond&highlight=