So this variant on Magikarp is suppose to be riffing on the invasive Asian Carp which is threatening the Great Lakes. Dark/Water or maybe Dark with a water ability.
The evolution would presumably be a regional evo that's based on another invasive species called the Snake Head which is a garly-looking fish that can actually climb onto land in order to reach new bodies of water.
The idea was to give Magikarp an evolution that stays more true to Magikarp's fish design while avoiding just being Mega Gyarados 2.0.
Not sure if Dark, Water/Dark, Dark/Ground, or something else yet.
