Ambipom

Ambipom is a  type Pokemon introduced in Generation 4. It is the evolution of Aipom. It is also known as the "Long Tail" Pokemon.

How to Obtain.
Obtain Ambipom by searching for Aipom in the second patch of grass nearest the EV NPC. It can also be obtained from Trading, or both the Normal Roulette, and the upgraded roulette.

Evolution
Ambipom evolves from Aipom, but it does not evolve further.