My axolotl has devolved faint red spots on its body

[Nicholas d]

My Lucy axolotl has devolved faint red dots on his body. His parameters are fine ph is 7.8 nitrate below evrything else is zero
Temp goes from 60-63 during the day. It doesn’t go above 63 he has a good appetite he gets bock worms and earthworms and bloodworms sometimes.
I will attach an image or video if that works of the spots in question. The breeder I got him from said he seems fine to themz so.

 

[Nicholas d]

He also looks like he has a dent in his head like a line

 

[EasternRomioi3]

How old is your axolotl? Could just be developing spots.

 

[Nicholas d]

I dint hve an exact date but I got him about a month ago when he was 4 inches
The spots only look visible when I shine a phone light on him

 

[Nicholas d]

Here’s a pic of the bottom of his head

 

[EasternRomioi3]

I don't think anything looks wrong with him, but I would still seek a second opinion.

 

[Nicholas d]

I just found out his lid was rusting, I took it off and am putting a egg crate lid on tmrw when I can get it. Do you think the rust caused this

 

[EasternRomioi3]

Rusty, oh my, that might actually be an issue. Yeah, replace it with a new one if possible.