Betta fish questions?

Beta Fish, also known as Chinese fighting fish originated in Asia. In the wild, they lived in the foot imprints of elephants. So they are used to living with no company in small confined places. A big tank will overwhelm them and cause stress. I recommend a bowl a little bigger then the cup you buy them in at pet stores. A little gravel and a small plant is not needed but adds sophisticated decoration. When changing the water, no more then 50% should be taken out. It depends how dirty the water is. It should be changed weekly. Scrub the tank when ever it is visibly dirty because there isn't really specific rules. Betas can be kept with small snails. I have seen in various pet stores that they keep two females together. There diet should consist of basic beta food you find at Petsmart, Petco, etc. They also eat blood worms. It doesn't matter if they are frozen or freeze dried but freeze dried are easier to keep. For daily exercise and stimulation, you should provide them with a small mirror 5 minutes a day. When they see their reflection, they fight with it. I hope this helped! Good Luck. They are very easy fish to care for.