It died from bloat. To much protien in it's diet. Next time you or anyone has that problem add epsom salt to the tank. I pour it right in, and it can't hurt the fish. it works like a laxative and you will see it all over the tank. just do a water change and they will be fine. usually but not always it will clear the bloat. you will know for sure when it eats again it's fine. other wise treat the tank again with the fish friendly, wallet friendly salt!
Hello my name is Filthy Sanchez and I'm a mixer.