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

I’m an expert in aquaculture, I offer project concept together with practical technical planning and competent project management for fish farming in recirculating aquaculture systems (RAS) and flow-through systems. 

I have been fascinated by water and fish from childhood. 24 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, freelance aquaculture expert 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!

Dimensioning of fish tanks, flow rate and filter technology on the basis of species-specific indicators, production capacity together with the availability of area and make-up water

Planning and design of tailor-made and standardized system solutions for commercial fish farming in recirculating aquaculture systems (RAS) and flow-through systems 

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