Will fighting fishes die when they are in air-con rooms?

Answer 1

I assume you mean "air-conditioned"

The answer, should be a "No", but if your indoor temperature is too low or too high and or fluctuates too much, then in that case the answer would be a "Yes", because your fish would then be subjected to environmental/temperature shock (the human equivalent of going from hypothermic to hyperthermic in only a matter of hours constantly, it would kill you eventually, and quickly). But if your indoor temperature is stable and between 68 and 85 degree's your fighting fish should be fine.

Also keep in mind, if you've experienced this before, you should keep in mind, a variety of factors could have played into the fishes death, and, to avoid this all again, please, please, please! Do your research about this fish (or ANY pet for that matter) before you adopt one, I know fish are easy to replace, and Seem easy to care for. But even the hardiest of fish (the fighting-fish is among them) can only survive for so long and in only so many environments. Thank you for (hopefully) considering my advice.