Qwilfish

Qwilfish is a Water-Poison Type Pokémon. It does not evolve. It shoots toe poison spines on its body in all directions. Its round form makes it a poor swimmer.

Appearance
Qwilfish resembles a pufferfish. It has a Blue-green top, and a pale underside. Noticeable things on Qwilfish are it's toxic spikes, it's paddle like tail, and Qwilfishes round shape. In Dimond & Pearl you can catch it out in the water you can get to out of Iron Island.