Hello Need help with my clownfish.

[Marioo!]

My clownfish got a dark red wound on its body and it is not eating and active as before

 

[eliaslikesfish]

what are the tank mates? hard to really see it from the pic

 

[Marioo!]

what are the tank mates? hard to really see it from the pic

Just the clownfish pair.Here’s a video

 

[crazyfishmom]

How long have they been in the tank?

 

[Marioo!]

How long have they been in the tank?

About 2 weeks now.Everything seems fine about the tank except for a little bit of nitrate.The other clownfish is in a very good health