Ok so i have normal gravel in my fish tank. ( I got them from my lfs). I do weekly water changes. Well i skipped two weeks because i had an AP US history mid term test so i had no time to do a water change. I have 10 tanks in total. Too much maintenance lol... I actually feed every other day. Pellets, frozen shrimp and talapia no live fish. Btw I only had my Flowerhorn for one week I got him last Sunday.(I had fish in and out that tank so its cycled; its been up for 2 years) I will post before and now pics of my flowerhorn. I messaged my friend he breeds flowerhorns and told me he had internal parasites... So idk if those internal parasites are those worms that I see; that's what I am worried. I have huge Oscars, red tail arrowana etc in my 220 and they have those worms as well and I don't want to loose them

. And yes the flowerhorn is by him self in a 50. I checked the water its all good except some Ammonia. I did a good water change and added prime. So that should be fixed