I woke up this morning to find cotton like white stuff at the openings of Lord Nelson's gills on both sides. I looked on this site and found that fungus best describes it. I bought him a 10g tank today along with some medicine for his fungus. It is Fungus Clear Tank Buddies (jungle Brand). The problem is that I already picked out the filter and hood by doing research on the Internet, and I still have to get them from Petco. I probably won't be able to go tomorrow because the youth at my church is baking cookies to sell. (We have over 70 dozen to bake!!!) The fungus clear comes in fizz tabs that treat 10g each with every tab, so I can't do that until I set up the 10g. I think it would be best to get a filter before I do the treatments. I've had Nelson 2 weeks today, and I don't want to loose him so soon. He has brought me great happiness, and I've gotten quite emotionally attached to him. My 10 year old brother asked me how I could love a fish. Really, before I got him, I was wondering that myself, since being you can't hold them or play with them the way you would a dog. But I see now. You can interact with them, just in a different way. And since I got him, I've been talking to myself a lot less. I love Nelson. He either likes me as well or associates me with food. I'm not sure which yet. Anyway, I really hope he pulls through this!!!