I have 8 pacus with 7 Aros ( RTC's , ID Sharks and Rclown knife) in a 15,000 gallon pond. Aros vary in size from a foot to around 2.5 feet; pacus are about 2 feet long. Having a big environment for them is key
henward.. hey.. dont.. pacu are phewww eating machiness.. i had a couple and they grew super quick in my pond.. they ate anythin and everything and freaked the aros (silver) out.. they were only scared bout the RTC.. leave them alone mate.. cheers.