My roommate has a beautiful blue halfmoon betta. But she changes the water about once a week in a bowl that I think is less that a half gallon even? He is currently turning brown in his face and front hanging fins and he is scratching himself on whatever he can. He also has a piece missing from his tail.
I currently have two male Bettas on their own 1 gal bins that I change everyday. This is their temporary home while the bigger tank is cycling.
I feel bad for her fish and I would like to treat him but I don't want to seem pushy for lack of better words. I thought she would notice I change the water in my bins every night but I guess not.
Its been this way for a while but I just happened to look over on her side today and he look more pale and his fins are becoming translucent.
So my question to you guys is how would you ask politely to treat a fish? Or would you ask at all? She did buy him but I just feel bad that he doesn't get clean water, but is is her choice I understand.