When I first got into the hobby probably about 9 months ago I bought a catfish from one of my local shops but they didn't know what it was and neither did I. He's very active and interactive and doubled in size but hasn't grown much in a few months, not really worried about the growing thing but today I noticed it looks like he has some sort of white worm like parasite on his belly near his anal fin, I tried taking pictures of it where you can see it but of course I couldn't get any good ones but I'll post what I have anyway. He's in my 20 gallon community tank, I introduced two small pacu's into it 2 weeks ago and one came down with lymphocystis yesterday and has been in quarantine since than, just want to see what everyone thinks if this could be that also or what? And also if anyone knows what type of specious that'd always be good to know as well, will post any pictures I have of him to get a positive idea on a specious and will also post what I have trying to show the odd looking parasite thing on him