Feed is a major challenge in modern fish farming :
Except carp, an herbivorous fish, most farmed fish (trout, salmon, bass, sea bream, etc.) are carnivorous fish fond of eating animal proteins.

Pellets for farmed fish usually consisted of fish coming from sea fishing.
This is no longer possible, in the 21st century, as the natural resource becomes scarce and wild fish is kept for human consumption.

Now feed for farmed fish mainly consists of vegetables from agriculture. To reach this result, major Research and Development studies were necessary to make our carnivorous fish accept vegetable food. Viviers de Sarrance is actively involved in these studies, particularly with the selection of a Rainbow Trout strain adapted to vegetable food.