Slow down at Lake Murten

The "Beach House" of Hotel Bad Muntelier -
a great place to chill out at the first warm temperatures of spring.

*** No fishing ***

Do they mean the fish eater goosander with the prohibition sign?

The town of Murten is located on the southern shores of Lake Murten. It is situated between Berne and Lausanne and is the capital of the Lake District of the canton of Fribourg.