right now in one of my tanks i have a 8 inch vulpinus and a 6 inch payara and a 5-6 inch odoe and a 5-6 inch gold pike and i want to add a 5-6 inch red tail cuda. do u guys think i can or do u think i may have problems?? the odoe is the most aggressive fish in the tank right now but hasnt bit any of my other fish.