Anthias Advice needed

Zalman

New member
I have had a trio of lyretail anthias in my tank for awhile. THey have been happy and eating well. Recently I noticed the runt of the 3 has been getting picked on and is looking rather sickly. It is still eating but very thin looking, scales look scraped up and a lump growing from the side of his mouth - hard to tell exactly what it is since it wont sit still.

Should I try to pull it out to medicate it? euthanize it? or leave it in and hope it gets better? The fish only shows itself during feeding time. After it is done eating it goes back to hiding in my rockwork.
 
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