Tynamo

Tynamo, known as Shibishirasu in Japanese, is an Electric-type Pokémon introduced in Generation V of the Pokémon series. It resembles a small, white eel with yellow zigzagging patterns on its sides, along with small black eyes and a star-shaped mouth. Although a single Tynamo generates only a weak electrical charge, they typically congregate in schools, and together they can produce a powerful electric shock comparable to lightning. They are amphibious, able to live both in water and on land. Tynamo evolves into Eelektrik at level 39, and then into Eelektross when exposed to a Thunder Stone. They appear in various forms of Pokémon media, including the video games, anime, manga, and trading cards.