Poll: What fish are the most and least debated in the hobby.?

[fish man+]

I think the most debated fish are the Oscar and the betta because there is much debate on how big of tank they need. I think the least debated is goldfish because most people will agree with you that they can't go in bowls or small tanks once you tell them how big they get, how much waste they produce, etc. Another lightly debated fish is the killifish species. What fish do you think are the most debated and least debated?

Thanks!!