Umm...sorry BFK but this is your quote from earlier in the thread:
"I have a few wild fish that I caught in the Amazon with my friends: A 15'' RTC, 12'' Silver Arowana, and a whole school of 12'' pacus and redhooks. I keep them with my tanK RASIED FISH AND THEY ALL ACT THE SAME. But the wilds are always hungry!"
^So did you or didn't you catch those fish with your friends as you said??^
Both of your statements can't be true, which one is it? If you keep an RTC and a "whole school of pacus", regardless of where you got them from, please listen to Dwarf Puffer -- the RTC can grow over 4 feet in aquaria, you would need 1000 gallon tank, and pacus grow over 2 feet and are fast growers. A 300 gallon is nowhere NEAR big enough for these fish as adults! Both are tank busters - do you have a 1000 gallon tank or tropical pond in the works for these fish? These are not the types of fish that are easily given away to an LFS when they grow to large....
Or do you even have them at all? I'm getting really suspicious of all your posts now, maybe it's just me.