So sadly it died not long after posting this. It just stopped breathing suddenly.
The lady at the shop was more helpful than anyone I've ever met. Other people don't care if you buy a new tank and fish in one shot without setting anything up.
As far as a cave, I read many betta information...
So I brought my betta fish only a few days ago after cycling my water for a whole week (the lady suggested only cycling it for a couple of days) and in the beginning it wouldn't swim around too much. All of the betta fish at the store were the same- not swimming around much in their tiny little...