5 Gallon Tank White patch on bettas head

I realized that my betta fish is growing a white patch on its head, I think it started 2-3 days ago, the betta is still actively swimming and eating, no signs or symptoms of any illness, I provided some photos for the betta , have a look on them, there is also one photo that shows the body of the betta incase you want to know if there is any symptoms I may not’ve seen (I don’t think so )

 

I'm no betta expert, but it could just be he's changing colors. I summon Betta'sAnonymous, whose actually a betta expert.

 

I'm no betta expert, but it could just be he's changing colors. I summon Betta'sAnonymous, whose actually a betta expert.

I know betta can change colors but I actually didn’t think of it, I hope its not something bigger, thanks for replying

 

I don't think this is a color change. That would look like bold patches of color, not filmy/foggy like this. It might be a problem with its slime coat. I'm sorry, I don't know enough to say for sure what it is, but hopefully it's not an infection of some kind

 

How often do you change his water, what are the parameters. Does he have an Indian Almond Leaf in his tank?
Clean water will help a lot in preventing and resolving scale issues.

 

I don't think this is a color change. That would look like bold patches of color, not filmy/foggy like this. It might be a problem with its slime coat. I'm sorry, I don't know enough to say for sure what it is, but hopefully it's not an infection of some kind

Alright, it could be something in his scales, maybe she injured herself in something

How often do you change his water, what are the parameters. Does he have an Indian Almond Leaf in his tank?
Clean water will help a lot in preventing and resolving scale issues.

It still her first week in the tank , but she was in a 2.5g before I put her in her main tank to make sure its safe for her, while she was in that 2.5g I changed the water every other day because I wasn’t sure if it was cycled, but now in his 5g I am planning to change 50% every week, as for the parameters I still didn’t get a test kit to test my water , unfortunately the nearest fish store to me don’t test water, but hopefully I will get my hand on a test kit soon, and lastly I don’t have almond leaves , but almond leaves aren’t a big deal because they are cheap, If didn’t find it locally I can order it online when I can.
I suspect that my betta has a small scale injury which requires clean water to prevent any infection, thats what I guess.