The world watches again: Utrecht's Fish Doorbell has started

On Monday, March 2, 2026, the Fish Doorbell in Utrecht started again. This happened for the sixth year. People from Utrecht and other countries can now watch fish at the Weerdsluis online again.

Do they see that fish are waiting at the lock? Then they can press a button. This way, they send a signal to the lock keeper.

The lock keeper can then open the lock, so the fish can swim further. This helps the fish to travel and live in the waters of Utrecht. The Fish Doorbell is very popular.

In 2025, 2.3 million people from all over the world came to watch. Together, they visited the website 30 million times. Many people like to help with nature in this way.