he keeps floating to the top
 

My betta fish Sigma keeps swimmimg to the bottom of his tank then floating back up .... should i be worried about him???

umm i dont think so, does it he do it constantly all day long?? does he look deformed in any way ( like a large abdomen?). if so a picture would be great.

I do believe its quite Normal for them to float..i read that when the betta just sits/float..that Means they are content!

How are your water parameters? Everything normal? Is he eating normally?