Yanma is the unevolved form, It evolves into it's First Evolution using 50 Candy. Their primary scaling attribute is Stamina.

Pokemon GO Yanmega Moves

Moves highlighted in green deal more damage from Same Type Attack Bonus

What is Pokemon GO Yanmega Weak Against

It's Weak to Flying, Fire, Electric and more Type Moves. However, it will take less damage from and is resistant to Fighting, , Grass, Bug Type Moves.

Weak Against Flying 1.4x Fire 1.4x Rock 1.96 x Electric 1.4x Ice 1.4x