Anadrom

Anadrome fisker lever en del af sit liv i ferskvand og en del af sit liv i saltvand. De udklækkes i ferskvand, emigrerer til havet og vende tilbage til frisk vand, når det er tid, at de vil yngle.

Vi antager, at de gør denne vandring, fordi de finder mere mad i havet end de gør i ferskvand. Velkendte anadrome fiskearter er laks og char.

Film: Anadrome fisk migrerer således fra ferskvand til havet og tilbage til ferskvand

Katadrome fisk gør det modsatte. De vandrer fra havet til ferskvand og tilbage igen.
Anadrom fisk har adgang til både ferskvand og saltvand.

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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