Clownfish with ripped up fins

[windcoast reefs]

Hey everyone,

I just had a near tank crash and everything is starting to get back to normal. But today, I noticed that my clownfish fins are very ripped up and one fin has a good chunk out of it. The fish looks pretty much normal other than the fins at the moment. Anyone have any ideas about what is wrong? Also is there anything I can do to help?