If two Pokémon are not in an identical egg group, they cannot breed at all. The Pokémon Manaphy and Phione are listed in the Water 1 and Fairy egg groups, however they cannot breed with others in that group, only with Ditto. One Pokémon can be of one or two groups. The egg groups are a classification used in the Pokémon games that defines which Pokémon are compatible with others when it comes to breeding. As well as having many Ground type Pokémon, the Field group contains lots of land … For each of them the result is a Phione egg, but Phione does not evolve into Manaphy.