Serpish: serpent, derp, fish, -ish (Water) based on snakehead fish that can move on land
Ekdyhiss: eckdysis, hiss (Water) a snake shedding it's skin as it leaves it's fish body behind, slinking across the ground
Bashalisk: basilisk, shale (Water/Rock) once a fish, this snake has now mastered the land and grown legs. Looks intimidating but still just a goof ball snorting out froths of suds
Mega Bashalisk (Water/Dragon) since it's already a pro on land, the sky was last to terrain to conquer. It can blow giant bubbles with the ring on its tail – big enough to encapsulate a Wailord
by Coltron3108