Shargodon

Shargodon is a Water/Dark-type Fakemon that appears in the fan game Pokémon Obsidian by Atomic Reactor.

It evolves from the Pokémon Sharpedo when exposed to an Astral Stone, and is the final evolution of the Pokémon Carvanha.

Dex Entry
Shargodon are the king of the sea. Not many are found because they live at the bottom of the ocean but legend says seeing one will grant good fortune.