22 Facts About Brown trout

Brown trout is a European species of salmonid fish that has been widely introduced into suitable environments globally.

Lacustrine morph of brown trout is most usually potamodromous, migrating from lakes into rivers or streams to spawn, although evidence indicates some stocks spawn on wind-swept shorelines of lakes.

Behnke relates that the brown trout was the first species of trout described in the 1758 edition of Systema Naturae by Swedish zoologist Carl Linnaeus.

Brown trout have been widely introduced into suitable environments around the world, including North and South America, Australasia, Asia, and South and East Africa.

Thirty-eight young Brown trout were released in the river, a tributary of the River Derwent in 1866.

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Brown trout are now established in Chile, Peru, and the Falklands.

The von Behr brown trout came from both mountain streams and large lakes in the Black Forest region of Baden-Wurttemberg.

The original shipment of "von Behr" brown trout eggs were handled by three hatcheries, one on Long Island, the Cold Spring Hatchery operated by Mather, one in Caledonia, New York, operated by pisciculturalist Seth Green, and other hatchery in Northville, Michigan.

In small streams, brown trout are important predators of macroinvertebrates, and declining brown trout populations in these specific areas affect the entire aquatic food web.

The spawning behaviour of brown trout is similar to that of the closely related Atlantic salmon.

Sea Brown trout are more commonly female in less nutrient-rich rivers.

Brown trout are active both by day and by night and are opportunistic feeders.

Sea Brown trout are fished for especially at night using wet flies.

Brown trout can be caught with lures such as spoons, spinners, jigs, plugs, plastic worm imitations, and live or dead baitfish.

Regional variants include the so-called "Loch Leven" Brown trout, distinguished by larger fins, a slimmer body, and heavy black spotting, but lacking red spots.

Field studies have demonstrated that brown trout fed on several animal prey species, aquatic invertebrates being the most abundant prey items.

Fry start to feed before complete yolk absorption and the diet composition of newly emerged brown trout is composed of small prey such as chironomid larvae or baetid nymphs.

Brown trout have had serious negative impacts on upland native fish species in some of the countries where they have been introduced, particularly Australia.

Farming of brown trout has included the production of infertile triploid fish by increasing the water temperature just after fertilisation of eggs, or more reliably, by a process known as pressure shocking.

Brown trout has been a popular game fish of European anglers for centuries.

Once brown trout were introduced into the U S in the 1880s, they became a major subject of American angling literature.

Outside the U S and outside its native range in Europe, introduced brown trout have created "world-class" fisheries in New Zealand, Patagonia, and the Falklands.