Powder blue tang flukes?

[beanbagtang]

Noticed these small strings hanging off only his dorsal fin on both sides. He’s been in a grow out tank for a year now with no new additions or changes to the tank. He’s gotten significantly bigger and starting to corner the bangai cardinal in there with him. So I couldn’t tell if it was stress related or possibly the start of flukes. I have prazipro in case but wanted to see if anyone else could tell from these bad pics. Thanks

 

[W31Olds]

Doesn't look like a problem to me and not Flukes. I would just monitor for now. If you can post a full shot of him we can better evaluation his condition, but from what I can tell he looks good.