Is this normal?

[majesticstorm]

So I "liked" the Fb page of this seller in thailand and am always delighted with pictures of the gorgeous fishes that are for sale randomly popping up on my newsfeed. Tonight he posted a picture of a betta that is rather unique and I just wanted to ask all of you whether you have seen such a thing. Here is the picture:

The betta seems to have a cap on its head like those red cap goldfishes. Is it normal and not a tumor of some sort?

[Hopelessaddict101]

I haven't seen that on a Betta before. I think maybe it is a tumor is a deformity.

[aemaki09]

Looks like a tumor to me. Thats not good. I really hope he isnt trying to sell that boy.

[eatmice2010]

omg yea im going to have to agree it looks like a tumor to me. the poor baby

[majesticstorm]

Thanks for the input everyone! I'm not sure if the seller plans on selling this fish (sometimes he just posts fishes that belong to him), but people have asked him what's wrong with the boy and he replied that the boy has had that on its head since he was young.