Buying huge fish and sticking them into little systems saying they are planning an upgrade for them when they get too big for their current tank..... then next thing you know (no upgrade). People not taking advice given to them, or answering back in a very smug fashion saying they already know more than the avg. aquarist when they are showing a serious lack of intelligence when it comes to stocking and general aquarium keeping.... There's plenty more but Im sure they have been touched up on in the earlier posts.
