Anchor worm? Or something else?
 

I noticed a couple of my tiger barbs starting to flick themselves on decorations in the tank. I've been keeping a close eye them for the last three days and today I noticed something on the pectoral fins of one of them, they look like white threads. I managed to get a photo and have attached it. Is this an anchor worm?

I've had the barbs for about three weeks now and added two nerite snails a week ago. Could this have come in on the snails or would it take that long to start showing up on the barbs?

At any rate, how do I get rid of whatever it ends up being?

Yes. It's easy to treat tho. I use microbe lift with good results. It will kill any inverts or crusteans in the tank tho

There are other meds that may not harm snails btw

Thanks for the help!

I found Cyropro by Hikari on amazon and that one says its safe for snails, I will see how that works. If it doesn't I will pull out the snails and try the one you mentioned.

OK cool, good luck!