You can also start feeding him food mixed with "Kent's extreem garlic." or another brand besides kent. Post a new thread asking about garlic and watch how many people respond. I swear by this stuff. What it does is it raises a fish's immune system; in other words, it helps fight off diseases like ick, popeye, etc. Don't just use it while your fish is sick, use it everyday. Not only does it work great for fish, but I also add it to my tank 3 times a week and this (helps) ick and other things from coming back. Many people think it cures ick...it does not, it only helps to get rid of it and helps it from not coming back. SWF.com sells it, but so does most lfs.
Use it and you will have happy:happyfish for a long time to com.