Yanma evolves as soon as it learns Ancientpower which is at Level 33.
it doesnt evlove by level. you need to trade it and it will evlove for them, then they trade it back.
Level 36.
Level 25.
Level 28.
Level 20.
55
Level 18
level 33
level 40
Yanma will evolve into Yanmega once it learns Ancientpower which it learns at Level 33.
Yanma evolves when it learns Ancientpower, it learns it at Level 33.
RAISE YANMA TO LEVEL 33 AND TEACH ITANCIENT POWER