About names

The names of our units are inspired by the different existing varieties of trout in Tierra del Fuego

Alpina Trout

The TROUT ALPINA is an anadromous fish of the family Salmonidaenativo alpine lakes and coastal waters of the arctic and subarctic regions.

It is closely related to salmon and trout, and shares characteristics of both. It can reach a length of 1.10 m and a weight of 15 kg. The published maximum age is 40 years. In general, the back is dark olive-brown, and the belly and flanks clear. The back and sides have red dots or pink larger along the sideline, at times the pupil. However, the color is very variable, depending on the situation, the season and the degree of sexual maturity.

This species occurs in deeper areas and lagoons of medium to large rivers and lakes. Anadromous forms spend much of their lives at sea, where they occupy a range of depths of 30-70 m. Non-migratory populations remain in lakes and rivers. It is extremely sensitive to water pollution; lives in cold, well-oxygenated waters.

The freshwater populations feed on planktonic crustaceans, amphipods, copepods, mollusks, insects and other fish.

His greatest commercial fishing is not of interest, but is a species used in aquaculture and a common trophy in sport fishing. A closely related species is the brook trout (Salvelinus fontinalis), somewhat smaller but highly valued in sport fishing.

It is marketed fresh, smoked, canned and frozen. It is eaten salted, boiled, fried and grilled.

The most common lacustrine units mature at a size ranging between 20 and 30 cm, whereas mature anadromous individuals between 30 and 70 cm. The mean size of the char, from commercial catches ranged between 49 and 53 cm between 1980 and 1993 off the coast of Labrador, Canada.

Arco Iris Trout

Name: ARCO IRIS Trout

Scientific name: Oncorhynchus mykiss

Other known names: PLATEADA

Weight and usual measures: The Arco Iris trout lives of 5-10 years is normal capturing specimens ranging up to 3 Kg, although you can catch fish than double that weight. In Argentina were captured specimens of more than 11 kg. The maximum length of a specimen was described measuring 120 cm., But usually a maximum length of 60 cm.

Distribution: This species is native salmonid Northern Hemisphere. It is a euryhaline freshwater fish and sea. It was introduced in Argentina from the United States late last century and from 1904, were taken to the San Carlos de Bariloche

Habitat and Life Cycle: A cold water fish anadromous capacity. The natural habitat of the species is fresh water of about 12 ° C. For copying in general searches under running water, so usually traced rivers and streams clean and fresh waters. Females dig furrows in the background with powerful movements of their tails, then lay their eggs while the males release sperm to fertilize; females then cover the eggs with gravel and leave the “nest”.

Physiognomy: A fish that is known for its beautiful coloration. It has a dark back, greenish to brown, mottled black like the flanks and dorsal, caudal and anal. A pink or red longitudinal stripe on each flank from the eye to the caudal fin, very noticeable in mature fish and especially in males during the breeding season. The mottled body is very variable.

In lakes steelhead usually has a coloration almost no spots and stripes (outside the breeding season), these are known as “silver”.

Diet: It feeds mainly on insects (larvae and adults, aquatic and terrestrial), molluscs, crustaceans and fish. Especially in ponds and in certain circumstances is wild cannibal.

In terms of diet, adults are generalists, feeding on invertebrates and fish of small size, while juveniles feed on zooplankton

Brook Trout or FONTINALIS

Name: Brook Trout or FONTINALIS

Scientific name: Salvelinus fontinalis (the latter name comes from Latin and means “living in the spring”)

Other known names: Fontinalis Trout, Brook Char, Brookie

Distribution and Origin: Native to North America, was introduced in Europe, South America, New Zealand, Australia and Spain.

In Argentina was introduced in 1904, brought in a refrigerated cargo from New York. These first Fontinalis were planted in our country in lakes Nahuel Huapi, Gutierrez and Espejo.

It belongs to the family of Chars, and within this family has the greatest similarity has with trout, although unrelated as it belongs to a different genre. Life history and habitat, are assimilated more to the Arco Iris and Marrón trout than any other kind of Salvelinus.

Weight and usual measures: In small streams are usually found small specimens, the order of 150-300 g. In rivers and lakes, size averages 1.5 kg., but sometimes copies of around 3 kg are caught.

Habitat and Life Cycle: One of its main features is its preference for cold water, compared to Marrón and Arco Iris trout that better tolerate higher water temperatures. The brook trout is adapted media whose temperature can range from 0 ° C to 20 ° C. They live between 2 and 3 years in small streams, between 9 and 10 years in rivers and lakes, although the maximum recorded was 24 years. Spawn in the fall and most spawning occurs in rivers like the Arco Iris and Marrón trout, but also spawn on the shores of the lakes.

Physiognomy: They have dark bodies with light spots, unlike the trout that have clear bodies with dark spots. The color of their skin is very striking, has red, yellow jackets, with white-orange belly and dark back. When approaching the time of spawning, spawn and have an absolutely distinctive reddish color of this species.

Diet: It is very voracious. Essentially feeds invertebrates, mainly insects. You can also feed on crustaceans, mollusks and small fish. Overall mountain streams have a fauna poor in nutrients, so food and low temperatures are determining factors for this species has a limited physical development that becomes the salmonid smaller size.

Marina Trout

The MARINAS TROUT are Brown trout that migrate to the ocean. Their life cycle is very similar to the Atlantic salmon, because both belong to the same genus.

In the province of Tierra del Fuego, the origin of these trout dating back to 1930 from fish Salmon from the center of Bariloche.

In the Rio Grande, the studies indicate that most individuals remain only two years. The courses that offer better living conditions ensure earlier migrations. During this stage, known as parr, the truchitas have a strong territorial instinct and a colorful livery, which highlights several dark lateral spots. The smolt (measuring between 15 and 25 cm) is distinguished from parr by its silver livery, the progressive thinning and deciduous scales. Weakened by this metamorphosis, loses its territorial instinct, shape shoal and is finally swept away into the sea.

Initially, the smolts roam the shores eating small crustaceans and other marine invertebrates. Their displacements increase with the expansion adding to your diet larger organisms as fueguina anchovy. The protein content of these foods allows an increase in weight several times higher than freshwater. This is the cause of large developing the species in southern Patagonia.

Removing the dire gillnets, which fortunately are rare in the Patagonian coast, the main enemies of the MARINAS TROUT are sea lions.

Unlike other anadromous migrations elliptical performing thousands of miles, the MARINAS TROUT not too far from the coast (believed to be the maximum is 150-200 km). A sample is that fishing high operating in Tierra del Fuego and Rio Gallegos rarely caught, but are seen frequently in coastal gillnets (as the case of Punta Loyola).

Scale readings made at the Rio Grande have yielded very interesting data. It is estimated that a copy of 9 kg has at least 9 years old and returned to the river to reproduce four to six times. For a copy of the middle age weight varies between 4 and 6 years, including one or two spawns.

In rivers like the Gallegos or Grande, with funding from gray sand and fine gravel, fish take a paler why a typical resident color.

Stocks highlighted environments (Tierra del Fuego): Ewan River, Rio Grande, Rio Irigoyen, Rio Menendez.

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