it is a variety of corn snake usually getting to around 3 feet long, Elaphe guttata intermontana you can find it if you search the breeders :) since corns are a really good starter snake dwarf corns are a great idea for those with limited space for vivariums.
:i dont think that is a species of corn snake. but some corn stay on the smaller siode, not 10 gallon small. you can go with the ever loving garter snake. i had one for a couple of years that ate goldfish till ig ave it a pinkie and it never ate a goldfish again. she ate three pinks every week with no problems. she was 14 years old when she died.