Originally Posted by okiemavis
Veggies should in fact be his staple diet (or a veggie based pellet). The nuts should be OK as long as they aren't his primary food. Pacu are meant to eat nuts in the wild, primarily Brazil nuts. Check this site out that gives you a comparison of nut fat content:
Brazil nuts, in my experience, have a shell that is seemingly made of titanium alloy. Or at least some sort of steel impregnated ceramic. They're darn hard to crack is what I am getting at here. Now, one suspects that you are recommending feeding sheeled, unsalted brazil nuts, but as these are part of the pacu's natural diet, and nutcackers are few and far between in the Amazon and its environs, one must believe that the fish eat them with the shells on in their natural setting. So do pacus have the choppers to handle such industrial strength nut cracking?
I ask out of curiosity rather than any realy utility, as I am several decades out from being an a position to have the sort of indoor pond that a school of pacu require.