Hi, please post more details about your tank, type of water used.
Also, if possible give us more details about the size of your fish so that the regulars here can make a more accurate diagnosis.
There are many species of clownfish and many species of shrimps.. So either a photo or a short description of how your inhabitants look will also help..
I want to help, but I don't want to speculate and give your advice without knowing too much about your tank..
Cheers,