Hole in betta fin

[PureAwesome]

Hey guys

I got home from school today and notices this hole in my poor betta's fin. I have no idea what it is and was wondering if you could help me.
I have missed a water change but I will be cleaning and changing 50% tomorrow when I get home from school.

Thanks

[PureAwesome]

I will post a pic as soon as figure out how to

[Eggbert]

What kind of plants and decor does your Betta live with?
Does your Betta have any companions?
How big is your tank?

[PureAwesome]

Hi
My Betta has live pants in his tank and a piece of decor designed for betas. he is in a 9 Litre (roughly 2.5 Gallon) tank and he has no companions

[Eggbert]

Hmm post a pic when you can. It could be a number of things like rot, biting or maybe he got caught on something if its sharp enough.

[Eggbert]

Hmm he could be a tail biter. A pic would help.

[Tikibirds]

Yeah, could be a number of things but sometimes a larger then normal water change will fix the problem.

[PureAwesome]

Hey guys he has bitten his tail before but I can't seem to post a pic does anyone know how??

[PureAwesome]

http://tinypic.com/r/wgt5hi/6

There is a link