I posted yesterday but I had to get off and can't find the thread anymore(very new to this site). I was at Wal-Mart 3 days ago and was buying fish food for my 4 goldfish(in 10gal at home). Long story short there were two red males in the same itty-bitty container who were both sickly and missing fins but both alive. I took them home and they are in 1gal bowls(I also bought royal blue finned, white and gray speckled male) the one male that seemed to have 'won' was eating about 1 dried baby shrimp a day(I don't know if this is the best food for them, I'll go and buy more later but it was late at night and strangly Wal-Mart didn't seem to have any other betta foods and that was what they were feeding them at the store) and swimming around merilly. The royal blue is fiesty, he will eat about 3 shrimp a day(depending on size) and showing off his beautiful fins(he also started on a bubble nest which is strange because I don't have any other bettas so no female). The last male(which I named Matrix) doesn't swim much and doesn't eat at all. I didn't notice yesterday but he has a damaged fin(I don't know whats it called, the one on his side close to his head and gills that helps him swim) and kind of swim side-ways. He is swimming more but still isn't eating, I've also noticed a few 'bubbles' under his chin and mouth. And of course his fins are completely torn up(worse than the other male) will they ever return? Should I treat for infection?