Anerythristic
A variant of Common Garter Snake (Thamnophis sirtalis)

Representative Common Garter Snakephoto — a dedicated image of this exact morph isn't available yet.
A recessive morph that removes red/orange pigment, leaving a clean black, grey, and silvery-white striped snake. The visual opposite of the albino line.
Keeper tips for this variant
Anery is simple recessive, so pair anery x anery (or to a het) to produce visuals; combine with albino over generations to chase the snow combo, but expect several seasons of het work.