Large, predatory brown trout are known as ferox, or cannibal, trout. Once considered a distinct species, it is now known to be simply brown trout that have evolved into a primarily fish-based diet that sometimes includes smaller members of its species. Ferox trout have a bent jaw and live longer than most brown trout.
The brown trout (Salmo trotta, Morpha: Foreo), and its marine form, the sea trout (Salmo trotta, Morpha: Trotta), are among the most important fishery species and are found worldwide. The species is native to Europe and western Asia, but it has slowly been introduced to many other temperate regions over hundreds of years. Brown trout have a brown body with various red and black spots, but there are many variations according to habitat and genetic makeup.
This species is found in various bodies of water, from small streams to large lakes and reservoirs. It mainly feeds on insects, larvae, and small fish. Sometimes, as most trout anglers discover, this species can be very picky about what it will eat.
