I was at the petstore yesterday..
And the woman, who was trying to sell another betta, was also giving out the wrong information! I 'asked' ( already knowing) If they needed heaters. She said NO. She said they came from the cold waters of Japan!! I was outraged. Then I said " But they're tropical." She replied with " Oh! They're labeled tropical because they can go with other tropical fish. It doesn't mean they need heaters :B" Obviously, being tropical means they need WARM WATER. Ugh. The stupid chick was ticking me off " They only need room temp :B" Ugh..