What's on my Tang?

[fishkeeprian]

Hello had my tang for months now qt'd, healthy and eats like a pig.

Woke up this morning to find white somethings on her fins around the edges. Is this lymph or flukes. I have two clowns in tank and they are looking good as always.

https://www.dropbox.com/s/d8was5rsgqd7842/20181225_094824.mp4?dl=0

 

[HumbleFish]

From what I can see, looks like Lymphocystis: http://edis.ifas.ufl.edu/fa181

Definitely too big to be a parasite or worm.