My betta fish has developed a red patch, is this dangerous?

My betta fish is blue and black. Five months ago he had velvet but he has recovered since then. Not long after that I noticed that he developed a red patch on his stomach and bottom fins but only on his left side. Currently he has popeye but he already had the red color before he got it. Is this bad or detrimental to his health?

 

A picture could help. I am not educated on all the fish diseases out there, but if the scales are just turning red and you don't see any other signs of damage then I would guess that your betta is just developing more color. Bettas often do this as they grow up.

 

Thank you! I would take a photo but can’t get a good picture of him lol

 

So I just checked again and got a better look while he’s being still, and apparently the coloration is on both sides of his body. I am a bit worried though because under the flashlight it looked gold-ish (mostly under his chin) as well as the red so I’m afraid he might still have velvet. I’m not sure but he still behaves normally. I did get some pictures though

 

Also, I don’t keep him in a bowl usually! This is just temporary until he gets a new tank! I take good care of my fish, I promise

 

I don't have any experience with velvet so I could be wrong, but it looks like normal coloration to me.

 

That looks like normal coloration to me. I would be concerned tho that he's had so many problems in such a short amount of time. Generally, stress opens up the door to a lot of issues and they're more likely to get sick. I would try to address why he's getting sick so often, once its resolved you won't have to constantly worry about velvet and all of that "fun" stuff.

What are your water parameters? How big is his tank? What temp do you keep him at? What does your normal maintenance routine look like?