Fish e.g. eel fish, breeding system, for use in e.g. closed water supply, has sorting device using sorting grid for sorting fishes according to sizes, where ration for fishes are individualized according to quantity of fodders

摘要

The subsystem has a sorting device that uses a sorting grid (93) for sorting fishes in a fish container according to sizes. Ration for the fishes of different sizes are individualized according to quantity of fodders and conditions of the fishes. The system is represented as the fish container as whole when the system is seen in top view, where the container is spiral or ring shape. The system has rectangular and oval profile in its cross-sections or is trough-shaped. The sorting grid is provided with operation platform (36).