Red Puss-Like Bloody Growth Near Betta's Eye?

[tehatro]

Check the attachment. It slowly falls off as he swims. Is it a scab? Or dried blood?

 

[Alm0stAwesome]

Hi, welcome to the forum. Your photo hasn't worked. Do you have a photobucket or flikr account? Any photo hosting site will do. Upload the picture there and post the IMG code here so we can have a look.
 
Can you tell us more about the tank?
 
For a start:
Size
Other tank inhabitants
How long has it been set up
ammonia/nitrite levels

 

[tehatro]

Size 1 gal
Betta by itself
I change water every 2 weeks


Pic http/oi60.tinypic.com/29zwhnt.jpg

 

[Wildbetta]

That really looks like a tumor of some sort.  It could also be an abscess from the water conditions.  In a 1 gallon you need to be changing the water 100% every two days or less.  Also do you heat the tank in any way?  If not, his immune system is going to be severely compromised.
 
How long have you had him?
How long has this issue been going on?

 

[tehatro]

Idk the blood thing has seemed to detached itself. Had him for 2 years, just noticed it few days ago

 

[attibones]

I would say that daily water changes as close to 100% are required. Please do your best to get a new home for this guy, at least five gallons. Clean, warm water is always beneficial. He needs his water to be around 80 degrees. 
 
It is very difficult to unreliably cycle a tank under five gallons. It's difficult to maintain water quality in the smaller tanks because you have less volume for dilution so ammonia, nitrite, and nitrate build up rather quickly. 
 
Something like that looks extremely painful. I would start taking care of this by improving water quality and getting some antibiotics on hand, just in case. If this is an open wound, your fish may get an infection which would kill him if this tumor thing doesn't. 
 
Hope he gets better soon. Looks awful.