Blazekickblaziken
Snarktastic Ditz
Why does a gnat become a moth? Why does a fish become an octopus? Why does a dove become a pheasant? Because Pokemon.
Hey at least venonat and venomoth are both still bugs, and pidove and unfezeant are both still birds.
remoraid(a fish) to octillery (a cephalopod) is like if your dog suddenly turned into a frog. I will always consider this evolution line the weirdest, even after understanding the whole revolver -> canon thing.
The Mareep evolutionary line gets pretty weird, I mean you go from two sheep pokemon to...well whatever Ampharos is.
Ampharos is a sheared sheep with a much heavier emphasis on it's light house inspiration.