Blue on top and white on bottom, Wishiwashi’s countershaded colors makes it hard to see from above or below. It can even change its shades to better match the time of day. Fishermen say for every one Wishiwashi you see, there’s 50 you can’t.

All the Wishiwashi that spawn from a batch of eggs count as a single Pokémon to the Poké Ball Capture Program. At first programmers treated this as a bug, but Trainers refused to let them fix the problem.