Yes
It probably means is going to die. It might be just going to sleep
No, betta fish are best as solitary fish, and unless they are going to mate, they do not swim together
Hundreds is typical although some will die young.
Betta fish get in fights with fish with colorful fins and bodies. If your betta gets in a fight while your away,the weaker fish may die. But if you see your betta fight with another fish you should try to split the two fish apart [or all the fish that are fighting].
it will be sick but if it continues then your betta will die.
Bettas can die at any time.
I think so
no, one of the fish will get attacked and die
Betta fish can die due to various reasons, including poor water quality, improper tank conditions, overfeeding, diseases, and stress. It is important to provide a suitable environment and proper care to ensure the health and well-being of betta fish.
Betta dish actually don't sleep, or they'd die.
other Betta fish and the bigger fish.
Betta fish do not eat fish.