Yes he will die.
it will be sick but if it continues then your betta will die.
No. Beta fish are very sensitive.They die easily because they are extremely suceptible to diseases, and if the temperature of their water is slightly colder than it should be, or if their water is not sanitary- has too much waste (pee or poop) in it- they die. I know this from experience. The same is true with goldfish.
Betta are airbreathers. So long as the ammonia and nitrates are okay, you don't need filters on a Betta tank.
You need to keep a betta in warm water with a temperate of 75-85 degrees. If you keep it in cold water it will eventually get sick and die
Yes, But i personally advise you not to use Aquasafe water conditioning products. your fish may die on the second water change
If your betta has lost his fins then something is drastically wrong with his water conditions and he most probably will die. If you want healthy fish, look after their water by changing it regularly and properly.
they die
You would die
They die
They die.
It will eventually die.
they die