Is my betta OK?

I have this male betta and it looks like his gills are puffed out.
His body is a light blue colour insted of the ordanary colour.

I have him for about 7 months now.
He is in a 46 tank with diveders. He is alone in the tank. The other bettas are in the breeding tank.
I feed him 4 times a week.
Is he okay?

 

how thin is the body? and what do you feed him? maybe post a pic?

i had this once with my male betta many months ago, i boosted him with some BS and bloodworms, and that got him going again....

 

Can you post a pic of him as Vez said, is it only the colour that has changed or has his behaviour changed as well?

 

Here is a pic. I feed him tetra prima food.The red ones
@Wyvren I think only the colour has change.

 

Ok if he is in a barebottom tank keep an eye on his poop, he mite have a parasite otherwise it might just be a colour change. As they age they change colour. And if he is still eating and active I wouldnt stress to much. Is he rubbing against anything like scratching himself?

 

He don`t rub himself againts anything. He is very happy when he saw me. He think I will get food every time he saw me.
He eat good so I will watch him for the next days.

 

How does his stomach look and is his scales smooth and flat against his body?

 

When I look at him above I saw that his scales where raised!
I think he has dropsy
What do I do?

 

Best you can do is not to let him suffer till he dies and just put him down.