This is the 2245th most frequent German word.
fisch
Fish.
Here, 'Fisch' is used as a noun referring to the animal.
Der Fisch schwimmt im Fluss.
The fish swims in the river.
In this sentence, 'Fisch' indicates the food prepared from the animal.
Ich mag Fisch zum Abendessen.
I like fish for dinner.
In this instance, 'fischt' is derived from the verb 'fischen', related to catching fish.