For species he is a domestic cat. Breed? Unless you got him from a reputable breeder you are never going to know. He's very pretty but he looks a lot, a lot, a lot like a kitten I have right now who we found in a nest when we live trapped her mother. Especially his face, I'm struck with how much he looks like our Derri.
DSH Domestic Short Hair, grey tabby. Love his name.