gill disease

Please help identify and advise of what are these on the fish gill. Thanks.

I purchased this orchid dottyback 2 weeks ago and It has had this one slightly puffed gill the entire time. At least I think it is slightly enlarged from its other. I thought maybe it was just an injury it sustained as I got two and they quarrelled the first day. They both hunt pods constantly...

My 1.5 year old melanarus wrasse has developed some sort of problem on only his right gill, seen in the pictures below. There also seems to be some sort of inflammation inside that gill. Otherwise he seems healthy and is eating and behaving normally. No other fish have any problems, and there...