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!

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 the construction of aquaculture systems: Project costing, 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