Theorie:

Study vocabulary about fish and sea animals. Part 1
 
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Carp – Karpfen

Cod – Dorsch, Kabeljau

Crab – Krabbe

Dolphin – Delfin

Eel  – Aal

Fish – Fisch

Goldfish – Goldfisch

Jellyfish – Qualle

Lobster – Hummer

Marine animal – Meerestier

Perch – Barsch
 
Examples:
 
In the sea there are many dolphins.

Perch is a very nice fish.
Quellen:
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