Mongolia

Mongolia occupies a singular place in the fly fishing imagination as the home of the Siberian taimen, the world's largest salmonid and one of the most coveted freshwater game fish on Earth. In the remote river valleys of northern and western Mongolia, where the steppe gives way to forested mountains and rivers flow through landscapes that have changed little since the time of Genghis Khan, taimen exceeding four feet in length and fifty pounds in weight still patrol the deep pools and log-choked runs, feeding on smaller fish, rodents, and anything else that enters their domain. For the adventurous fly angler, pursuing taimen in Mongolia represents the ultimate wilderness fishing experience — a journey to the edge of the known angling world in pursuit of a fish that is part predator, part prehistoric relic, and entirely extraordinary.

The rivers of northern Mongolia, particularly those in the Eg-Uur, Onon, and Selenge watersheds, hold the healthiest remaining populations of taimen. The fishing is conducted from ger camps or floating tent camps along the river, with anglers covering miles of water each day casting large articulated streamers, mouse patterns, and surface flies to undercut banks, logjams, and the heads and tails of deep pools. The take of a big taimen is one of the most violent strikes in freshwater fly fishing — a savage, visible explosion as a fish that can weigh as much as a springer spaniel engulfs a fly on the surface. The fight that follows is a battle of attrition, the taimen using the river's current and its sheer mass to test tackle and angler alike.

Beyond taimen, Mongolia's rivers hold Siberian grayling, lenok, and Amur trout, all of which provide excellent fly fishing between taimen encounters. The lenok, a close relative of the trout, is an eager dry fly feeder that provides fast action on lighter tackle, while Mongolian grayling with their oversized dorsal fins rise willingly to small dries and nymphs in the riffles and runs between the deeper taimen pools. The multi-species nature of Mongolian fly fishing ensures that even on days when the taimen prove elusive, there is always action to be had.

The season in Mongolia runs from June through October, with September and early October often producing the best taimen fishing as the fish feed aggressively before the onset of winter. Summer months bring warmer weather and longer days but can also bring high, off-color water from rainfall. The logistics of fishing in Mongolia are inherently complex, involving international flights, domestic transfers, and overland journeys to remote river camps, but the reward is access to one of the last truly wild fishing frontiers on the planet.