Hey there! I saw your post on your sick fish. It sounds like your little guy may have ammonia poisoning from dirty water...in a tiny bowl, you pretty much have to change the water every day. They don't tell you that at the pet stores, but they should.
Go ahead and change your fish's water with clean, treated water, and move him to the warmest room in your house. Then change the water daily. Hopefully, this will perk him up.