ok guys, i was at work tonight and this lady come walking in asking for a few fish. she wanted a few platy's and a few mollies. so i bag the fish up for her and hand them to her and at this point she starts telling her friend that they are going in her unheated tank... i turned around to her and was like, these are tropical fish and need a heater to have a constant water temp. she then starts jumping down my throat telling me that she has been keeping tropical fish for a year and has not had a heater.