I have caught a feebas and raised it to a milotic so I think i can help you. On route 119. the route below fortree city. there is a long river. There you can catch a feebas using an old rod. i Got
mine at level 25. not bad huh. Anyway, there are six tiles that you can catch Feebas in so that would make Feebas extremely rare and milotic even more rare. To evolve Feebas, a pretty easy, but
hard at the same time task you must maximize Feebass's beauty.
I reccomend ONLY and i mean ONLY these berries for pokeblocks.
1.Pamtre berry:text Challenge contest to the berry master's
wife.
2.Kelpsy
3.hondew
DO NOT Use poke block with levels under 20
Enjoy our Milotic I mean feebas.