Scientific name:
Salmo gairdneri

Natural spread:
America

this until 70 cm long, in the longitudinal direction green, red, and yellow-metallic gleaming fish carries its name rightly. The rainbow-trout is spread and confessed in Germany today as the European trout, because one naturalized it in game-waters and in pond-economies. Two reasons were crucial on that occasion: To the one, it is more fast-growing, and to the other reacts it less sensitively on higher water-temperatures and environment-influences (to introduce of Abwässern).

its natural spread-areas lie in the inner-waters of the American west of Canada as far as after Mexico. From this type, there are traveling-forms, that are called "steel-head-trouts" because of its coloring. There is also one of the sea-trout corresponding open sea-form, that ascends into the rivers to the Ablaichen. They since 1882 to Europe of imported rainbow-trouts come from the sierra Nevada (California) from not migrant brook-forms.