Welcome to the wonderful world of fish! I have eight Betta's at work! If you want to make room for other fish in your tank, consider getting one of those little 2g betta tanks, they have some that have filters and everything with them,and they are not very expencive. That way you have more room in your other tank. Betta's are pretty smart, mine see me coming with food a mile away, if you feed them around the same time, they will look for you. Sometimes when you just get a new fish, or move them, they won't eat right away. make sure you get the drops for cholrine and keep your lid on, Betta's jump.