Young Allis Shad Alosa alosa (Clupeidae) Would Not Be Euryphagous: An Assessment of Juvenile Diet and Prey Selectivity under Riverine-Type Conditions

Figure 1

Diagram of one artificial river used for Alosa alosa rearing. The dark grey rectangle and squares represent concrete walls; the light grey rectangles represent the location of the artificial habitats (riffle in the narrow channel; steep slope bank in the large channel); the white and light grey areas were available for fish; the grey arrows represent the water inlet (left) and outlet (right); the black rectangle represents the propeller used to create a circular current; the black arrows represent the main direction of the water current; the black crosses represent the release points of cultivated zooplankton that were close to the probes; the white stars represent the four sampling points of zooplankton.