rybník
A rybník is a man-made pond or small lake, typically found in Central Europe, particularly in the Czech Republic and Slovakia. These artificial bodies of water were historically constructed for aquaculture, primarily for raising carp, which is a traditional and important food source in the region. The construction of rybníky dates back to the Middle Ages, with many large pond systems developed during that period, often by monasteries or noble estates.
Rybníky are usually shallow and are characterized by their often extensive networks of dikes, canals, and sluice