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Anadrom fisker

Anadrome fisker lever deler av livet sitt i ferskvann og deler av livet sitt i saltvann. De klekkes i ferskvann, utvandrer til havet og kommer tilbake til ferskvann når det er tid for at de selv skal gyte.

Vi antar at de gjør denne vandringen fordi de finner mer mat i havet enn de gjør i ferskvann. Velkjente anadrome fiskearter er laks og røye.

Anadrome fisker vandrer altså fra ferskvann til havet, og tilbake til ferskvann.

Katadrome fisker gjør motsatt. De vandrer fra havet til ferskvann, og tilbake igjen.

Film: Anadrom fisk trenger tilgang til både ferskvann og saltvann

Film fra: Natural Resources Wales (CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0), via Wikimedia Commons.

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