Rainbow trout

rainbow trout

The rainbow trout (Oncorhynchus mykiss, formerly Salmo gairdneri) is originally from North America, starting in the second half of the 19th century in Europe it was also cultivated as a food fish. Because of lack of restrictions the rainbow trout became naturalized all around lakes and rivers in Europe and is now part of "normal" fish population in many streams and rivers.


The rainbow trout is an excellent food fish that is bred in fish farms. They are more suited for that than other native trout species, because they also tolerate higher water temperatures (up to 25° C).


Rainbow trouts can grow up to 80 cm in lenght and weigh up to 10 kg.


On dark ground its reddish side strips can be clearly seen, especially on older males in the spawning season, while the body on a light background is almost invisible. It is similar to the native brook trout, but has not the strong pattern of red dots.