Single post in PokéDex errors

I'm not sure if this is technically a Pokedex error or not, so apologies if this is in the wrong place? On some of the Pokemon wikis/information sites (Bulbapedia/PokemonDB/Serebii), Fidough and Dachsbun are labeled as being in the Field/Mineral egg groups, while on Pokefarm they're in the Fairy/Mineral egg groups. If this is how it is in-game and the wikis are wrong, fair enough, I just figured I'd point it out :)