Wait a minute here, you had a jardini with 13” rtc and 13” pacu, ok yeah, in what size tank ? Folks are saying they are agressive if not enough space, you said the same and a 300 I would suggest (and hope with those fish) is much smaller than you have.i did have one with some silver dollars, 9 inch hornet cichlid, 9 inch oscars a 13 inch rtc and a 13 inch pacu. sadly it passes away recently. didn't bother anyone. it was about 20 inches
If we are heading bigger tank then you will undoubtably head to bigger fish, but if we stick with the current parrot, Oscar, blochii types then there are other pims, the odd hemibagrus , girraffes, armoured cats (quite a few), Clarias (depending where you live) Lima shovelnose, even in groups, ……….. the list goes on and on. Pretty much depends what u like, where I live and what u can get hold of. Easier to tell you if something won’t work when u figure what u want.
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