Fish disease

Question
Hi, one of my gouramies that i recently bought had a white paste looking thing in its mouth. A few days later it starting swimming upside down. The very next day i found it dead at the surface of the water. i've just recently found one of my guppys have caught this disease. Help Me Please!

Thanks

Answer
Tyler,
Does it look like it has a piece of cotton in its mouth? If so, it has cotton mouth. I have enclosed a link that is great on how to treat it.

http://petcaretips.net/cotton-mouth-disease.html

Let me know, if after checking out the above link, if you don't think this is what your fish has.Cotton mouth is very infectious and contagious.