Hello everyone. My clownfish have recently (last 2w or so) developed some marks on their head regions. So far they seem confined to the white stripe just behind the eyes but I’m concerned. At first I chalked it up to abrasion from constantly swimming around, wiggling on, and fanning their eggs, which they laid on a rock after a spawning attempt about 2w ago, because I figured they might be scraping themselves on the rock. The spots are getting worse though. Sorry for the terrible pics. It’s hard to get a good shot of two moving fish with an iPhone. The marks are irregular in shape and look to be slightly indented. Does anyone know what to make of this? They are the only fish in the tank at the moment.