Then there are the customers that want to know more about bettas.."What would happen if I put them together?" "Why are the females ugly?" "These fish eat bamboo, right?" "My betta doesn't move except to eat, he just sits on the bottom all the time, why is that?" and after some questioning "Well, I keep him in a fish bowl about this (hands indicating something roughly softball sized) big..." and my least favorite, while I was doing their water changes, "Hey, if I pay you $20, will you dump a couple of those guys in the same cup for me?"