Reply #4: Thanks! Wasn't sure if I needed the bio filter established first or not,

[Rabrrrrrr]

or if the little dude will be enough.

My other fish are fine - and this little guy has had his popeye for a bit more than a week, and is still active and eating and loving life.

I had an albino catfish that had popeye, that I bought the same day as this one, that died in about three days.

But from now on, no more new fish except that they sit in the quarantine tank for a while. (the catfish were just the second batch of fish into the main tank, and the store people said I didn't need to worry about a quarantine tank yet, since I only had 3 other fish in the tank when I bought the catfish).