Her spots stay mostly uniform without the typical peckoltia size change as it gets closer to the dorsal. The slate is about two inches wide in the picture with a yellow toned led light over the tank she is in. Just trying to figure out what exactly she is so I can attempt to locate her a male to spawn.
Sorry about the poor quality pictures, she didn't stay there long and I wasn't trying to stress her further on her first night with me. I have looked through to catalogue but have yet to see one that closely resembles her (most are stated at a much lesser average adult size) for features. Apologies for the dirty outside glass, I generally don't clean the sides just the front/interior.

