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Foto: Lars Bräutigam

Welcome to one of the largest zebrafish facilities in the Nordic region. During a one-hour guided tour, our staff will walk you through everything from technical equipment and animal husbandry to cutting-edge research.

What does a large-scale animal facility look like, and how does the staff work? What measures are taken to ensure the welfare of the animals? In which research fields are zebrafish used? How can they contribute to the discovery of new medicines and a deeper understanding of human diseases?

See how zebrafish are bred—from mating and fertilisation to adulthood. Learn how to distinguish between sexes and how we keep track of thousands of individuals. Take a look through microscopes to observe embryos and larvae at various stages of development. You’ll also witness fluorescence glowing brightly inside living larvae. If you’ve never seen a green, beating heart or red blood cells flowing through a vascular system, now’s your chance.

The tour also includes a demonstration of a high-throughput system used in drug development. You’ll learn how zebrafish are used to understand human diseases and to identify new treatment methods.
There will be time for your questions during and after the tour.

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Fluorescence illuminates internal structures within a living zebrafish larva. Photo: Lars Bräutigam Flourescens lyser inuti levande zebrafiskyngel. Foto: Lars Bräutigam

About the event

Date

6, 7 and 9 October 2025

Time

9:00 and 12:00

Address

zebrafish core facility, Karolinska Institutet, Nobels väg 16, Stockholm

Language

English and Swedish

Admission

Free admission, pre-registration required

Två besökare på Nobelprismuseet tar en bild på sig själva
© Nobel Prize Outreach. Photo: Clément Morin

Nobel Calling Stockholm

Join us during 3–13 October for ten inspiring days filled with activities around the city as we celebrate the announcement of this year’s Nobel Prizes.

Enjoy engaging talks, live music, guided tours, competitions, exclusive lab visits, and much more.

Chocolate medals
Photo: Alexander Mahmoud © Nobel Prize Outreach

The shop

Discover a range of literature, gifts and souvenirs which connects to current exhibitions, the Nobel Prize and Alfred Nobel.

Children in the museum exhibitions
Photo: Clément Morin © Nobel Prize Outreach

For families

Experiment in our workshop room, take a quiz or explore the childrens room.

Membership

Become a member,
experience more

Get free admission to the museum, and discounts in the shop and bistro. Enjoy priority access and discounts on concerts, previews, talks, and lectures.

Person taking picture on a large digital screen with color patterns
Photo: Clément Morin © Nobel Prize Outreach

Events

Friday nights at the museum

Explore our events, which span from concerts, literary talks, lectures, and performances to food and drink tastings.