Hi all I just left Pet-smart with my new beta..he's red and so pretty. I asked the pet store guy how to take care of them and he said " nothing to it". I told him that I had 5 neon's in the tank and they died the next day. And also one other fish. It just died yesterday. I've been doing everything that I was supposed to do so I wanted to get a fish that wouldn't die on me. He told me that I should use the same water, don't change it and just add the beta. I asked if I needed anything for it, heater, filter anything. He said no, they don't need much at all. Ok so I got home, I did change the water cause I didn't want him in the water my other fish died in..waited for about an hour and added him. He stays at the top not moving.. I read on here that I DO need a heater and the water needs to be at at least 78, am I right. I really need some help, hes too pretty to die and the guy at the store apparently didn't know his behind from a hold in the ground.:-?