(good luck to you and your fish. sorry I can't help much because I'm nowhere close to an aquarium fish expert)
They might be camallanus worms but I doubt that because it doesn't look red and isn't as long as the typical ones you'd see.
Since those parasites look worm-like, here's an article on...
Corals that are priced reasonably, please. Is this article accurate? ---> https://www.buildyouraquarium.com/clownfish-tank-mates/ (I want to add 1 - 3 more saltwater fish along with a clownfish in a 50 gal)
If so, please list a link to some or type some out. If there is a book to varieties (when I say varieties, I mean specific names of guppies for each pattern), please link it. I was thinking about getting guppies and cross-breeding as a hobby. Everytime I search for specific types, I just find...