Hello! I`m rex-m, recirc expert MSc Matthias Mahnke.

As an expert in aquaculture I offer project concept, technical planning and project management for fish farming in recirculating aquaculture systems (RAS) and flow-through systems.

For this I have specialized in freshwater fish such as trout, char, sturgeon and caviar. I reject RAS projects for land-based marine fish farming and tropical aquaculture.

The water world has fascinated me since I was a child. 25 years ago the master`s degree program Fishery Science and Aquaculture allowed me to increase my passion. Since then I have been working as fish farm operator, project engineer and project manager.

In the year 2015 I have founded my one-man business rex-m. As a freelancer I don’t sell any equipment. Instead I offer following services and I guarantee to work on every task myself!

Conception of land-based fish farms on the basis of species-specific performance indicators, production capacity together with the availability of space and make-up water

Preparation of planning documents for aquaculture systems: Project costing, equipment specification, engineering drawings, process diagrams and system descriptions

Support of the project execution in the preparation of submission documents for the authorities, technical purchasing, building supervision, training of fish farming staff and production management