洄游 Traditional form: 洄游 Pinyin (reading): huíyóu Definitions: (of fish) to migrate Characters: 洄 - backwater; an eddy a whirlpool 游 - to wander, to travel, to tour, to roam Traditional characters: 洄 - backwater; an eddy a whirlpool 游 - to wander, to travel, to tour, to roam