I just started Pokémon Platinum and I don't know which Pokemon to raise. I have an EXP. Share and I try to evolve my Shellos to a Gastrodon. Is it worth raising?
PX Note: How worth the time is training and using Gastrodon vs using other water types, taking important battles and ease of use into question
One of Shellos's 2 main problems is that it evolves kind of late. Even after evolving, Gastrodon has relatively low speed and attack stats, so Gastrodon can outspeed and one-shot fewer opponents and must take annoying status moves from more of them. The good waters that evolve earlier and have better stats are Empoleon, Gyarados, Floatzel, and Vaporeon. Use Torterra or Gliscor if you want a ground Pokemon.