No fish at the door right now
We’ll be back on March 2, 2026.

Thanks for tuning in and giving the fish a hand. Because of you, thousands of our finned friends made it through.

The fish migration season has come to an end, so the Fish Doorbell is taking a break. The camera is off, the bell is silent, and the fish are finishing their journey. But don’t worry, the bell will be back! Starting March 2, 2026, the Fish Doorbell will be ringing again, and we hope to see you then—ready to help the fish migrate through Utrecht once more.

Every spring, thousands of fish swim through the Oudegracht in Utrecht, looking for a place to lay their eggs. But the Weerdsluis is often closed. That’s where the Fish Doorbell comes in. When you spot a fish on the livestream, press the doorbell. The lock keeper will check to see if the lock can be opened. Together, we help the fish continue their journey. Curious how the Fish Doorbell works, how it all started, and who’s involved?

More about the Fish Doorbell

Something to be proud of

This season in fish numbers

30 million visits

In 2024, there were 20 million visits. What an incredible growth!

2.4 million unique viewers

So many of you enjoyed the underwater views at the lock.

200,000 times the doorbell was pressed

And thousands of fish were safely helped through the Weerdsluis.

What a catch!

Your best (fish) photos

Missed any fish?

Watch all the Fish Doorbell Journals from the 2025 season. Dive into stories about fish passages, underwater nature, and special fish like the river lamprey!

Watch all Fish updates

Have you spotted these fish too?

Here, you can keep track of the species you’ve seen

Read why we help the fish

Blub!

Want to learn more about fish and underwater nature? Check out our Fish Doorbell lessons, specially designed for grades 5 to 8

More info and education about the fish

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