Rhabdophis species (formerly named Natrix). This are Asian snakes.
Ik kept in the eighties Rhabdophis tigrinus and that is one pretty snake.
But watch out! They are more "venenous" than Thamnophis, Natrix and Nerodia!
Rhabdophis subminiatus even killed someone.
I haven't seen them for a long time in the trade.
I think that when I would find a few in a shop or on an expo I will not be abled to resist them.
This is a Rhabdophis tigrinus...