Hybrids gotta be my number 1 dislike. not because i think they're just that damn ugly (which they are damn ugly) but because of everything that goes along w/ being a hybrid as well. It's cruel and unusual punishment to something that didin't ask for it's genetics to be screwed with.
PB do nothing for me, never kept them. But have kept some native species in the past, they did not much for me either. RBP I feel the same way about, had one. was the worst pet fish I ever had, waste of a tank imo. I feel the same way about all piranha pretty much, the only one I have any kind of interest in wouldl be the payara.
Comet goldfish are feeders now pet. sasrasa,shebunkins are all the same fish as far as I'm concerned.. cool looking feeder fish.
majority of africans you can keep, but I do fancy the tang shell dwellers, neolampus line is an interesting group of fish.
most S/As you can keep like JDs, I like Oscar's personalities.