Trout is a freshwater fish belonging to the Solomon family. It includes both populations living exclusively in the freshwaters, as well as populations living in the sea (sea-going) and then going back to the rivers. The trout contains high amounts of phosphorus, magnesium, vitamin A and omega-3 fatty acids, with many beneficial properties for the heart, other peripheral vessels and the brain. Ω-3 fatty acids have a positive effect on many different systems in our body and help reduce cholesterol and triglycerides.

Trout is a medium-sized fish, about 70 centimeters long and weighing one kilogram. The maximum length recorded is 140 centimeters and the maximum weight is 50 kilos. They can live up to 38 years. They have a thin body, sometimes with oval profiles, depending on the environment in which they live. Their scales are small. They have two dorsal fins, a fat and relatively small placed far behind. The tail fin is dwarf, with the back edge sometimes straight, while the lobes are almost symmetrical and accented. Their color varies according to environmental conditions. Generally, they have a grayish-blue or a brownish-looking backlit and shiny silver side, sometimes prone to gold or reddish. They have black spots on the back and red-orange on the sides, which are enclosed by a faint halo. Stigmas are more pronounced in trout living in deep water. Their mouth is large and extends behind the eyes.