Bleak

Look for tight, fast-moving shoals near the surface of slow rivers, canals and lowland lakes across much of Europe, often visible as a shimmer of silvery flashes on calm, sunny days. Shoals frequently rise to feed on insects at dusk, producing small dimples or splashes across the water that give away their position. Warmer months bring the most active surface feeding, making late spring through summer evenings the best time to spot them.