My goldfish can't seem to open his mouth when eating. Its mouth is not as clean as other fish, and there are some pimples and bloodshot eyes. What happened?

Maybe your water is not clean ... please return it quickly. ..

By the way, buy a bottle of malachite green at the place where goldfish are sold ... generally two drops 10 liter of water is enough.

Can be disinfected

Then find another basin of water. ....

Put a drop ...

Fish drugstore has something to sell.