yellow tail blue damsel

i am not sure what is on his face,the picture i took didnt come out that good he want stop moving,he didnt have in the morning,but when checked him out in the afternoon he had it.i do have a bi color dottyback,he is pretty aggressive,so i am not sure if it was an attack or what.let me know what you guys think.Thanks JOE


29 gallon tank,been running for 10 months or so
nitates -0
nitrites - 0
amonia - 0
ph 8.2
sg 1.023 - 1.024
water temp 79 degrees

 

Can't really tell from the pic. Is the Y-T new to the tank. If he is and he has a lesion, I would suspect a dottyback over all others. Mean little fish they are.

 

thank you for the fast reply,he has been in the tank for 3 or 4 months.And yes the dotty is pure evil and pretty smart fish.the Damsel is eating like a pig still and his fins are still there. i think the dotty back is going to go in a 10 or a 20 gallon by him self.Thanks JOE

 

It looks like popeye to me, my yellow tail had it. I treated his food with melafix and it disappeared after a few days.

 

i will try to get a better picture tommorow,thanks joe