Originally Posted by cjayBetta
I didn't say she was keeping Wild betta's I just stated that in the wild they adapt to temperature change so naturally a Betta in captivity would still have the capability to adapt to a fluctuation as well. I will give you that maybe not large fluctuations but I cannot see a slight drop or rise affect the Betta's over all health.
These bettas are not in the wild though. A fluctuation of a few degrees is okay but you really never know what could happen in terms of weather. It is winter right now so heaters are on, keeping the betta nice and warm. But what about summer when the air conditioning is on? In the summer we keep our house at about 70 degrees, which is too cold.
All I am saying is that it is better to be safe than sorry. If they don't want to get a heater then they don't have to. I just don't like to risk my bettas' health.