Why is my betta fish fat on one side?

My bottom feeder fish just suddenly got really fat, is it pregnant? if so, do I need to do anything special?

Like if there is anybody that has had a Betta or has a Betta - do they sleep? and if they do what does it look like?

Hi. I have a female betta fish who has a big belly, a horizontal stripe on both sides which is grey in colour. She has a lit...

why don't betta fish like other betta fish cause I want baby betta fish???

I gote 3 fishes at the store and one of them is fat and lopsided and the fishes in the fish tank chase her.

I have two betta fish and they are both male. I was told that the way of knowing when they are ready for breeding is they wi...

What fish can live to be over 100?

I have a female betta fish, that is approx...4-6 months old, she is in healthy condition, and is an active swimming fish. My ...

He is in the tank and he won;t eat or he isn;t moving. He is staying in one place not sure what to do. Can you help me pleasE?

I have a red male betta that I got at wal-mart about a month ago he is doing great thank god! I have him in a 1 gallon goldfi...