thanks ! they are all in a 150 right now.. but i am putting the little red tiger, the managuense and the little dovii in a 220 gallon by them selves for now until they out grow it and then i will upgrade again. and the oscar, red isletas and the red devil will stay in the 150
also the red tiger and the jaguar are the only fish that really fight, the little dovii i saw fight the red tiger once... but the dovii's aggression hasnt came in yet but over all the most aggressive is the red tiger or the red devil..