Hello, I have a 3 inch common pleco named Fluffy (because when ever they move their fins fluff up). My tank is a 30 Gallon (I know Fluffy will eventually outgrow the tank). Temp is usually hovering between 78-80 Nitrate: 0 Nitrate: 0 PH: 7.0 Amonia: 0 But that's with my recent water change, I was too worried to check before I did the change, It had been about a week and a half sinse my last change and was hoping to wait the full two weeks to get the water change and new filter in at the same time. THE PROBLEM: My pleco, Fluffy, is your typical pleco at 3 inches, so picture this lettle fellah, now, take a white bead (if you've ever picked appart styrofoam, how it's made up on a ton of small little styrofoam beads) the bead is about that size. Take that bead and stick it to the fleshy part of the pleco's front left fin (Pectoral fin I believe). He does not have small white spots anywhere on him, so I really can't imagine this is Ich (if you think otherwise PLEASE let me know!) The only other issue is his tail fin seems to be having a hard time opening, the skin membrane part (the fin itself) just inside from the outter edge is a sort of red tinge in a backwards crecent moon shape following the shape of the fin. It does not spread through the whole fin, just a crecent moon shape redish. Aside from that nothing really appears wrong with him, the bead is really quite large and perfectly round. I have him in a hospital tank with salt added. I haven't added medications yet as I am unsure becuase I read on another forum that pleco's are sensitive to meds, not to mention I really have NO idea what he is sick with, the only thing I found was "Saprolegnia Fungus" or "Lymphosistis Virus" which is the more unlikely of the two as information sttes it rarely effects freshwater fish. Again the only white part is the rather large white bead on his front left fin, and then the tail issue which seems to disallow him to open his tail fin (looks like he wants to open it but end up just shaking, like a human when the muscle has been used so much it shakes when you try to use it as it's very tired.).