bubble in my clownfish skin
just got a new true percula, about 3 weeks ago, and I noticed the day I got him he has, what appears to be, some small "bubbles" under his skin. they are about a millimeter in diameter (or smaller) and only appear underneath his white stripes. there are 3 of them total on his body and I cannot seem to find any info online about this. it doesn't fall into the category of any diseases or parasites I have looked up. he seems perfectly healthy and active eating habits are normal
all my parameters are safe and stable. like I said he had these when I picked him up.
just wondering if anyone knows/has seen this before
any input is appreciated, and thank you!