Is it normal for this to happen to my fish?
I bought three little fish from Wal-Mart a few weeks ago. They were small silver fish about 1" long. A week after I got them, one of the fish's stomachs started to really bulge. At first I thought I was overfeeding the fish, so I fed it a little less. That didn't work, so I just figured it was pregnant. A few weeks later, it died. The same thing happened to the second fish, and now my last fish is getting fat too.