What is this? Safe?

[pingpangdang]

Originally Posted by YakDout

One of my recent fish had that. Not sure what it is. Froze my fillets for two days, made sushi for four people a few days after. No one got sick. Hopefully no long term consequences.

Hopefully someone here can ID this growth....i have not paid much attention to guts until I saw that 2015 post. I hope it's nothing but now I'm thinking about microscopic parasites.