More about Brown Trout
Brown trout are native to Europe and Asia, but the natural distribution of the migratory forms may be circumpolar. Sea-run brown trout are not considered endangered in any location. But in some cases, individual stocks are under various degrees of stress due to habitat degradation and artificial (hatchery) propagation leading to introgression.
Brown trout like cold (60-65 degrees F, or 15-18 degrees C), well-oxygenated waters, especially large streams in mountainous areas. Cover is important, and they are more likely to be found where there are submerged rocks, undercut banks, and overhanging vegetation.
Browns in fresh water have the ability to grow to 9+ pounds. Although in most small rivers a mature brown might average 2 to 3 pounds. Tierra del Fuego’s Sea-Run Browns are another story, and consistently push into the 20-30+ pound range. Fish this size are the ultimate prize.
Brown trout are active both by day and night and are predators. While in freshwater, their diet can include small fish, frogs, and wayward mice as well as mayflies, stoneflies, caddis, and terrestrial insects. A brown’s unapologetic, all encompassing appetite is what makes it a fly-fishing favorite.