clown health

The adhesive handle on my glass lid fell off and the lid made a sudden loud sound as it shut, will my fish suffer permanent hearing loss one of my fish is now hiding.

Hi guys, I'm worried about one of my clownfish, he seems to be having trouble swimming and keeping himself upright. There seems to be some sort of color change or discoloration on one of his gills too. Not 100% sure what it is or whats causing it. I got him about a week ago and he's only started...