Fish are the most important residents of Utrecht’s waterways

They are vital to the rivers, canals, and waterways of Utrecht. And by doing so, they support biodiversity and the livability of our city.
So we give them something back. When fish are ready to spawn and lay eggs, we help them on their journey. Thanks to the Fish Doorbell’s live stream, you can see what’s happening underwater—revealing that the Oudegracht is much more than just a body of water.

Knowledge about fish species and the quality of underwater life
The Fish Doorbell also helps us learn more about the species swimming through the city. We use this knowledge to improve the quality of underwater life in Utrecht. While many fish already inhabit the canals, there are still too few natural shelters like dead wood, aquatic plants, or reefs. By working together, we can create cleaner, healthier waters full of life!