Utrecht’s iconic fish doorbell has officially returned for its fifth consecutive year, and the excitement is palpable. Launched on March 3, 2025, this unique initiative allows individuals around the globe to assist migrating fish at the Weerdsluis lock. Viewers can now use the underwater livestream available at visdeurbel.nl to observe fish and alert the lock keeper whenever they see fish waiting to swim upstream.
Last year, over 20 million people tuned in to the livestream, with the digital doorbell being pressed almost 150,000 times to signal the need for the lock to be opened. This impressive turnout highlights not only the initiative's community involvement but also its importance for local fish migration, explained city ecologist Anne Nijs.
"It is actually the only way fish can reach other waters," Nijs stated, stressing the significance of the Weerdsluis as a lifeline for various fish species venturing to their spawning grounds. Typically, during the early spring months, the lock is closed for vessels, leaving fish stranded for weeks, which can lead to dire consequences for their survival as they become prey to birds and larger fish.
To combat this problem, the fish doorbell was introduced, allowing river enthusiasts to watch for fish at the lock and alert authorities when they are present. Every year, thousands of fish benefit from the project, which has transformed from being merely local to having gained international attention.
People worldwide participate, sharing their experiences on social media platforms like TikTok and X. Nijs noted, "We even receive fan mail!" highlighting the enthusiasm and emotional connection many viewers have with the fish doorbell. Some users expressed their excitement leading to celebrations during the occasion. "This morning, someone asked when exactly the doorbell would go live because they wanted to throw a party for the occasion," added Nijs. Viewers also report how watching the fish provides them with much-needed calm during stressful times.
The fish doorbell typically remains active from early March until late May, but due to its popularity, last year the services extended for another month. New measures have been introduced each year to improve fish safety, such as the addition of protective structures to help shield them from predators.
This year's livestream also brings along the introduction of Utrecht’s new city mascot, Barry de Baars, representing the European perch. This adds a fun and engaging element to the project, drawing even more viewers. Data indicates the likely fish sighting times align with early mornings and dusk, with certain species such as eels and pikeperch most often seen at night.
While perch and bream are frequently spotted, the livestream users have also seen northern pike, common rudd, and even catfish. The diverse aquatic life not only signifies the richness of Utrecht’s waterways but underlines the initiative's purpose of promoting biodiversity and healthy ecosystems.
Utrecht’s initiative has made waves beyond the city itself. Reports show Germany leads the international participation with around 464,000 users, followed by the United States with 137,000 users, and the Netherlands at 131,000 users. Other nations participating include the United Kingdom, Austria, Switzerland, and Canada, showcasing the project’s global appeal.
Next week, Utrecht city alderman Linda Voortman is expected to address the success of the fish doorbell once again. She has previously remarked, "The fish doorbell is embraced en masse every year by Utrecht residents and people far beyond. Last year, there was also a lot of international attention. This shows how many people enjoy the fish doorbell, but also how important it is. It is a wonderful initiative to increase knowledge about underwater nature." This sentiment invites many more to join the cause.
Overall, Utrecht’s fish doorbell symbolizes innovation and community involvement, reminding us of the importance of protecting our natural ecosystems. Mark your calendars and prepare to engage with this fascinating project—tune in now at visdeurbel.nl and assist those fish on their migration paths!