An iconic fish of our freshwater ecosystems, the zander (Sander lucioperca) has become perfectly established in the Vendée region, where rivers, lakes, and canals offer rich and varied habitats. Originally from Central Europe, it has adapted to our climate and is distinguished by its mysterious behavior, unpredictable activity patterns, and the finesse of its bite. Slender, fusiform, and built for hunting, the zander has a silvery body with dark vertical stripes and eyes particularly sensitive to low light. A formidable nocturnal predator, it can exceed 1 meter in length and 10 kg in weight, although fish measuring 40 to 70 cm are the most common in our waters.

In the Vendée region, the zander prefers large bodies of water, slow-moving rivers, and deep pools. It readily inhabits areas near structures such as submerged trees, riprap, drop-offs, pontoons, and old, flooded paths. Its behavior is closely linked to light: it avoids bright sunlight and often hunts at dawn, dusk, or on overcast days. Its diet consists mainly of whitefish—roach, bleak, and rudd—but it also preys on crayfish and other large invertebrates. Its long mouth and fine teeth are adapted for quick and precise attacks.

Zander spawning season extends from April to June, when the water temperature exceeds 12°C. The male builds a nest on the bottom and vigilantly protects the eggs until they hatch. Outside of the spawning period, the zander is one of the most interesting fish to catch, both for the quality of its fight and the technical skill it demands. Highly prized for its flesh, it often outnumbers pike in the lakes of the Vendée region. Fishing for it requires patience, precision, and an understanding of the environment—all qualities that appeal to sport fishermen.