Widespread in cool waters in many parts of new Zealand in lakes of central North Island and southwards, and in rivers. Introduced from the Pacific coast of North America. Found in pools in rivers and in open waters of colder lakes. Spawns in winter when 3-4 years old in cold, fast flowing, gravelly rivers, the young moving down to lakes as they grow. Has reached 9.5kg in New Zealand, world record is 16.5kg caught in Lake Michigan. Rainbows feed on immature and adult insects, aquatic invertebrates, fish eggs and small fish. They are a favourite of fly fisherman, but can also be caught on spinners, plugs and a wide variety of baits ranging from worms to small marshmallows.

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