Yuusuke (ユウスケ, Yūsuke) is a fisherman in the Land of Fire.

When he was a child, he and his father tried to catch a giant summoned marlin, they failed, resulting in his father's death. Yuusuke became determined to avenge his father by catching the marlin.

Trivia:

Yuusuke's appearance was modeled after his seiyuu, singer Yuusuke Kamiji. He also performed Otakebi, the movie theme of Naruto Shippūden 5: Blood Prison, which premiered a week before Yuusuke's debut in the anime.

(source: naruto.wikia.com)