The Fish Doorbell — The Fish Doorbell

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Every spring, thousands of fish swim through the Oudegracht in Utrecht, searching for a place upstream to lay their eggs. But the Weerdsluis is often closed. You can help the fish continue their journey! If you see a fish, press the doorbell. This alerts the lock operator to open the lock.

Want to learn more about the Fish Doorbell, how it all started, and who is involved?

Look in the morning or evening

Most fish are active at dawn or dusk.

Choose the right time of year

The first fish appear in March, but the migration really picks up from early April.

Spot the special species

Eel and zander are mostly spotted at night (if you’re lucky!).