One of Serbia's most valued dedicated catch-and-release fly fishing rivers — a clear limestone spring creek near Valjevo with strict barbless hook rules. Brown trout and grayling in gin-clear karst water flowing through a forested gorge. The Gradac is Serbia's closest equivalent to a Western European chalk stream: technical, selective fish in crystal water demanding fine tippets and precise presentation. Mandatory C&R, barbless only, fly-only beats.
- Limestone