How do Rainbow trout hibernate?

Rainbow trout do not hibernate in the traditional sense, but they do enter a state of reduced activity during colder months. As water temperatures drop, their metabolism slows down, leading them to become less active and seek deeper, warmer areas of their habitat. They may also congregate in schools to conserve energy and reduce the impact of colder temperatures. Unlike some other species, they can remain active during winter if water temperatures are mild enough.