It doesn't evolve by level but by maxed out beauty.
In order to evolve feebass first max out its beauty then level it up it should evolve.
You trade it holding a prism scale
Aipom does not evolve in emerald
it doesn't evolve
aipom does not evolve inpokemon emerald
At level 42 it will evolve into Glalie.
In Pokémon Emerald, Bulbasaur will evolve at Level 16.
At level 35 it will evolve
Sableye does not evolve.
Wynaut evolves at level 15 in Emerald.
In Pokémon Emerald, Drowzee will begin to evolve at Level 26.
Magby should evolve at level 30.