Copepods: the best food for fish larvae

Blue Linked is developing culturing techniques for copepods which are a high value and natural food source for fish larvae. Research shows that raising fish larvae on copepods up to the stage of fish fry leads to better results than the use of conventional food animals such as brine shrimp (Artemia sp.) and rotifers (Brachionus ssp.).

Succesful culture of turbot

In our Fish fry hatchery we have succesfully raised turbot larvae (Scophthalmus maximus) into fish fry, using self cultured copepods.

Copepod (photo: J. Kros).
Copepod (photo: J. Kros).

Innovative water purification system

At the heart of the experimental set-up is our innovative water purification system, unique in that it keeps water both clean and alive in a closed system. It uses technology that allows the culture of vulnerable marine organisms such as plankton and fish fry. In addition, it considerably reduces energy consumption by making traditional water purification techniques, such as sand filters, redundant.

Biological, sustainable fish fry: free-range fish

Our water purification system operates as a self-regulating mini-ecosystem. The technology is copied from nature and therefore safeguards reliable operation. Based on the same three principles by which natural marine ecosystems maintain their equilibrium – living plankton, waste processing and active substrate – it creates clean and living water. We want to use this innovative approach towards water purification in a closed system for the biological culture of fish fry: free-range fish. The first step to achieve this is to raise algae and copepods in a mixed culture. In traditional aquaculture systems, these primary components of the food chain are cultured separately. Our aim is to attain a breakthrough in ending this unnatural practice.