Clown fish not looking good.

[Nuvotank]

Hi all,
I have a 20 gallon nuvo cushion fish tank and i have had it since December. I’m new to this but i got 2 clowns about 2 months ago and they were doing fine until i went on vacation for 3 days (yes, i had someone feeding them and looking after them) and he called and told me one wasnt looking good. When i got home the bigger one of my 2 his tail was torn up and he is eating and the he also has on the white parts of his body like a “bruise” like look on it. Could anyone help me out?
Salinity= 1.026
Nitrates= 0
Ammonia= 0
Ph= 7.4

Thank you.

 

[Tahoe61]

Guessing the other clown or fish is beating up the clown. The fish also looks like it's a disease process going on. I would put the other clown in an acclimation box if you do not have quarantine tank running.

Loved my Nuvo 20, fantastic tank.

Welcome to R2R.

 

[Nuvotank]

Thank you very much !