What be this on my chromis

[Dearth]

Noticed this on one of my Chromis yesterday been fairly busy so really haven't looked at tank in last 6 days or so. It has got what appears to be a cyst or a boil on its side with a hole at the top of the cyst/boil. The fish has not been from what I can see in distress nor has it been swimming erratically from all appearances been doing its normal fish stuff.

Haven't been able to find anything online so can anyone tell me what it might be

Here are 2 pictures sorry taken with my IPad not best quality

[Slyguy00]

pretty hard to tell from those pics.

[Madreefer]

Originally Posted by Slyguy00

pretty hard to tell from those pics.

Yea it is. i've looked in my books as per your description and cant really find anything. Try RC and post a question in the Fish Disease section.

[Dearth]

I will see if I can get a better picture before I go to bed this afternoon

[Dearth]

took iphone video of the fish sorry again not the best but best I can do ATM ok I am off to bed need sleep before work tonight

[TimT]

I would suspect it is Lymphocystitus. Add some Iodine to your water and that will help it to go away.