Mongolia

Mongolia's taimen are the largest salmonid in the world — an ancient char-like apex predator in northern Asian rivers. Fish over 50 inches are landed every season; the all-tackle record is a 93-pound fish from Siberia's Kotui. Taimen will eat mice, marmots, ducks, and rodents — they're the freshwater equivalent of a top-of-food-chain saltwater predator.

The Uur and Egiin rivers in the northern Khövsgöl province are the classic Mongolian taimen destinations. Operations like Mongolia River Outfitters run float trips with ger (yurt) camps moved daily to cover water. A 10-day trip yields fewer but unforgettable shots — 4–10 taimen hooked per angler is typical, with one or more trophy-class fish a realistic outcome in a good week.

Ulaanbaatar (UBN) is the gateway. From there it's an internal flight to Mörön or Khövsgöl, then an overland/river journey to the camps. September is the single best month. Expedition-style trip — cold nights, basic infrastructure, but unmatched water.