Ocellaris clownfish red spot

[potatopuffer]

Hey I have 2 Ocellaris clownfish in a 150 gallon fowlr tank. I noticed when I got home that my biggest clownfish has this red “sore” on the side of her mouth. I’m not sure if it’s a wound from the other fish. Or if it is a bacterial infection or what. I tried to get some decent pictures, i apologize if it’s hard to see! Her behavior has been normal and she’s been eating as well. Any ideas of what it could be? Thank you!

 

[Uncle99]

How long that’s been there?

 

[potatopuffer]

How long that’s been there?

i just noticed it today. I check them daily and it wasn’t there yesterday