Fish in Lake Geneva

Fish of Lake Geneva: Diversity, Gastronomy, and Must-See Visitor Centers

Lake Geneva is home to a fascinating aquatic biodiversity, with many different fish species populating its deep waters and, just as importantly, local restaurant tables. While some fish are native to the lake, others—like the pumpkinseed—were introduced over time, sometimes by fishermen. Whether you are a recreational angler, a gourmet, or a nature enthusiast, Lake Geneva is a prime destination for exploring this rich environment, especially thanks to two highlight visitor centers: the Lake and Fishing Ecomuseum in Nyon and the Maison de la Rivière in Tolochenaz.

Key Fish Species of Lake Geneva

• Perch: The undisputed star of lakeside menus, perch range from 15 to 40 cm and weigh between 100 g and 2.5 kg. They rise from deeper waters in spring to spawn and are served as fillets in many restaurants all around the lake.

• Pike: This iconic predator can reach up to 1.2 m and 20 kg. It spawns between February and April and preys on fish (sometimes half its size) and even birds, an ecological balance showcased at the Lake and Fishing Ecomuseum.

• Whitefish (Coregonus or “Féra”): Renowned for its delicate flavor, the féra spawns in December, can grow up to 60 cm and 3 kg, and is one of the highlights of the region’s fishing heritage displayed at the Maison de la Rivière.

• Arctic Char: Typical of deep Alpine lakes, the arctic char weighs from 500 g up to 10 kg and spawns from mid-November to mid-January.

• Trout: Reaching up to 80 cm and as much as 15 kg, trout spawn between November and January and feature prominently in educational programs at the Maison de la Rivière.

• Burbot: This nocturnal fish weighs up to 2 kg and reaches 60 cm, spawning in March along the lake’s edges.

• Carp (also known as tench): Growing up to 1 m and weighing as much as 30 kg, carp spawn in May and are notable for their resilience—frequently highlighted during visits to the Ecomuseum.

• Gudgeon: A small fish, 10 to 15 cm long, popular for frying yet rare on restaurant menus—a symbol of Lake Geneva’s hidden biodiversity.

Other Inhabitants of the Lake

Lake Geneva is also home to less common or lesser-known species, including grayling, ruffe, venger, rudd, chub, crucian carp, bream, barbel, bleak, minnow, spirlin, bullhead, stickleback, eel, pumpkinseed, and catfish (wels). All of these fish play an important role in the lake’s natural balance and can be seen in the educational aquariums or during guided tours at the Maison de la Rivière or the Ecomuseum.

Two Essential Destinations

For a complete understanding of Lake Geneva’s fisheries and aquatic life, a visit to the Lake and Fishing Ecomuseum in Thonon is a must. This interactive ecological museum traces the history of fishing on the lake, displays various species, and raises awareness about sustainable resource management. The Maison de la Rivière in Tolochenaz, near Morges, immerses you in aquatic ecosystems with giant aquariums, educational activities, and interpretive trails dedicated to the fish of Lake Geneva and the region’s rivers.

Gastronomy and Conservation: Protecting the Balance

Lake Geneva’s fish are harvested according to strict spawning periods and sustainable quotas, helping secure the region’s biodiversity. In restaurants from Geneva to Lausanne, Montreux, and Evian, specialties like perch fillets, grilled féra, and smoked trout are prepared with artisanal skill, a legacy celebrated and explained through exhibitions and displays at both visitor centers.

Discover, Taste, Protect

The natural and cultural heritage of Lake Geneva invites everyone to explore, taste, and respect the local ecosystem. Check opening times for the Lake and Fishing Ecomuseum and the Maison de la Rivière and consider planning a family or school outing to learn more about the lake’s remarkable fish.
Visitors are invited to be stewards of Lake Geneva’s exceptional natural legacy—helping preserve and promote the region’s unique aquatic heritage.