betta pale

I've decided that I'll try fostering bettas, taking them from terrible pet stores in an attempt to get them healthy enough to find a new home. Even if I don't succeed, I figure I can at least give them a nice big home to spend their final days in, instead of dying alone in a tiny little cup...

I have read posts and websites until my eyes are crossed trying to figure out what is wrong with my betta. He has been a very active, happy boy until last week. I was out of town for 3 days and when I returned home, I discovered that someone in the house (no one will own it) unplugged his...