• Dissel 4, 1671 NG Medemblik, The Netherlands
  • +31 227 570 020


ISO 9001:2015

Number #1

Fish Protection

Leading Provider

Of fish-friendly solutions

FishFlow Innovations

Gerard Manshanden. FishFlow Innovations CEO.

‘Coincidentally I just had an idea for a passage that could prevent fish mortality in pumping stations’

During a visit to a pumping station in 2002 Marcel Klinge, fish biologist at Witteveen+Bos Consulting Engineers, discovered large scale fish mortality at the station. Shortly afterwards he expressed his concern about fish mortality in pumping stations to Gerard Manshanden, professional fisherman at Lake IJsselmeer. Gerard told Marcel that he happened to just have had an idea for a fishpassage to safely guide fish around the potentially lethal pumps of pumping stations! They decided to work out the idea together. The cooperation has resulted in the construction of the first “fishway for pumping stations” in the Meerweg pumping station, near Groningen in the conservancy area of the Hunze en Aa’s Waterboard, in 2005.

The cooperation between G.A.M. Manshanden Productie B.V. and Witteveen+Bos Consulting Engineers was formalised in a joint-venture. In October 2006 the company FishFlow Innovations B.V., of which both G.A.M. Manshanden Productie B.V. and Witteveen+Bos Consulting Engineers are shareholders, was launched. After a fruitful cooperation of 6 years, FishFlow Innovations is now fully owned by G.A.M. Manshanden Productie B.V. as of January 1st 2012.

FishFlow Innovations, a company in motion

By today FishFlow Innovations has grown to a worldwide leading company in innovative fish friendly products for passage and deterrence of fish. Our products offer new solutions that help to prevent fish damage and mortality. Every design revolves around the natural behavior and preference of fish.

FishFlow Innovations is the preferred partner for water boards and water related organisations that uphold efficiency and well-being of fish.

With 8 patents and more than 70 realised projects in 5 countries we are building a future where the prosperity of aquatic ecosystems and efficient generation of sustainable energy are taken for granted.

FishFlow Innovations in Medemblik

Innovation from advice to realisation

Because FishFlow Innovations takes care of every aspect; on site inspection, design, production and installation, we are very capable of putting job specific insight and knowledge into practice.

Our customers are can delightfully expect a practicable custom made solution for each and every issue.

We strongly believe in the importance of creating sustainable solutions that require little maintenance. That is the reason we always work with tough, high grade materials. Because of our devotion to quality, combined with our in-depth expertise regarding fish behavior and hydrodynamics, all FishFlow Innovations products have a very high efficiency, a long life expectancy and are highly fish-friendly.

Want to meet us in person?

You are always welcome to visit our headquarters in Medemblik

Have a look in our workshop and office.
You can contact us through the contact page.