Definition
The allis shad, also known as the allice shad, is a ray-finned fish found in European waters. This anadromous species migrates from the sea to freshwater rivers to spawn. It's a bit like a European version of salmon in its habits. The fish is silver in color and can be an important food source for predators. Habitat destruction and overfishing have impacted its populations. Conservation efforts are essential for this species to thrive. Think of it as a sign of a healthy river ecosystem.