Thanks for watching and ringing the bell!

Thanks to you, thousands of fish were able to continue their journey. The fish migration season has now come to an end, so the Fish Doorbell is taking a break. The camera is off, the doorbell is silent, and the fish have reached their spawning grounds. The Fish Doorbell will be back on March 1, 2027. We hope to see you again next season to help the fish on their way.

New to the Fish Doorbell?

Every spring, thousands of fish swim through Utrecht’s canals on their way to the Kromme Rijn to spawn. Along the way, they reach the Weerdsluis, a historic lock that isn’t always open. That’s why there’s an underwater camera at the lock. If you spot fish on the livestream, ring the doorbell. The lock keeper receives a notification and opens the lock when enough fish are waiting.

Curious about how the Fish Doorbell works, how it all began, and the people behind it? Read on and discover the story behind the Fish Doorbell.

Dive into the data

What happened during this Fish Doorbell season? Which fish appeared most often? When was the doorbell rung the most? And from which countries did people help the fish?

Our DataVISuals bring the season to life. Explore fascinating facts, remarkable fish sightings, and discover how people from around the world came together to help migrating fish.

Explore the DataVISuals

Your best (fish) photos

What a catch!

May 17, 2026 8:36 pm
May 16, 2026 6:12 pm
May 25, 2026 5:30 pm
A European perch swimming close past the Fish Doorbell underwater camera.
May 25, 2026 12:34 pm
May 24, 2026 9:19 pm
May 24, 2026 1:46 pm
May 23, 2026 9:19 pm
Inflatable perch named Barry at the Neude in Utrecht.
Maarten Florie shows a Fish Doorbell tattoo of a perch ringing a bell on the left thigh.
Screenshot of an Instagram post by satirical news site De Speld with the text: “Russian submarine disguised as a fish enters Utrecht waters
Chalkboard on a street with the text: “Come on, to the lock! The fish want to reach the canal! visdeurbel.nl – Tommy.”
Screenshot of an Instagram Story with the text “How I Feel Watching @visdeurbel Stream. Sorry I Can’t. I’m Watching a Live Stream”, showing someone watching a stream while looking at a creek with a cappuccino.
During a night out, nine people pose next to Barry, the inflatable perch.
wo people hug beside the lock next to a Fish Doorbell banner.
Screenshot of an Instagram post featuring a painted image of a perch.
A chicken watches the Fish Doorbell on a mobile phone
A Fish Doorbell fan points at a computer screen and smiles at the camera. The screen says: “We did it! We saved a fish.”
A class watches the Fish Doorbell livestream. The image says: “Mr. Gleason’s class in Wyandotte, Michigan always watch the updates and love the Fish Doorbell.”
Screenshot of a meme showing someone comparing different fish species on screens to determine which fish was seen during the Fish Doorbell livestream.
Screenshot of an Instagram post showing multiple screens with a livestream, entertainment and the Fish Doorbell, with the text: “Watching along and opening the door for fish at the same time. That’s a vibe.”
A dog watches the Fish Doorbell livestream on a tablet.
A person gives a thumbs-up beside a Utrecht canal, with the Weertsluis in the background.

Want to learn more about fish and underwater nature? Check out our Fish Doorbell lessons.

Discover the fish

Blub!