BROOK TROUT (Salvelinus fontinalis)

Fishing Season: November through March

The Brook Trout is very beautiful and voracious, and it changes its color according to the food it eats. It is greenish brown, sometimes iridescent, with light and red spots on its loins and the upper part of the head. The abdomen is pale pink. Due to the pink color of its flesh, it is called salmon-like trout, or salmon.

Since it prefers colder waters rich in oxygen, its distribution is restricted with respect to the other types of trout, being better represented to the west of the province of Neuquén in mountainous environments. As regards size, it is the smallest of the Salmonidae in Neuquén, and only occasionally surpasses 4 kg. in lake environments.

RAINBOW TROUT (Oncorhynchus mykiss)

Fishing Season: November through March

It has a small head and a long body. It has two dorsal fins, the smallest of which is exclusively composed of adipose tissue. It has a bright blue or green color on its flanks, and a silver white color on its abdomen. In the middle of each side it has a longitudinal striking red stripe. This color is typical of the species, but it may vary from one trout to another, and even disappear in some of them. Those ones are called "plateadas", which means of a silver color.

There is also an important variability as regards color in relation to the spawning season, having mature specimen a darker and brighter pigmentation. All its body is splashed by little dark spots that extend from the tail and fins to the head.

It is possible to find it in almost every river and lake in the province of Neuquén, and it is highly appreciated by anglers for its combativeness and size. They reach as much 10 kg. in lake environments. It feeds on insects, mollusks, crustaceans and fish.

Interesting info about Rainbow Trout:
The optimum temperature for the Rainbow Trout to fatten and grow is between 13º C and 21º C (56º to 70º F).

The minimum amount of saturated oxygen in the water required by Rainbow Trout to survive is 5 to 6 parts per million. It must normally have from 9 to 11 ppm, almost the total saturation (14 ppm).

Alkalinity (PH) is another important factor. The adequate ranks are 7 or 8, but in a 6 PH Rainbow Trout do not reproduce because the environment is too acid.

Rainbow Trout are sensitive to color. Brown and Rainbow Trout perceive some light absortion ranks in the spectrum which are completely invisible to us (350 nanometers {350 x10e-9m}), being red one of the colors they perceive more intensely. What is almost impossible to prove is whether any animal sees colors in the same way as we perceive them.

BROWN TROUT (Salmo trutta)

Fishing Season: November through March.

This is probably the most popular Salmonidae among anglers, since it lives in hardly accessible environments, in places difficult to reach with a bait, adding to this its characteristics. This kind of trout is evasive, unpredictable, aggressive, and enormously cunning, which makes it really difficult to catch.

In rivers, its loin is darker brown, with a golden brown color on the flanks and a white yellowish tone in the abdomen. It has spots scattered on the body: green and brown on the upper part, and on both sides they mingle with red dots wrapped in pale circles.

It is found in different kinds of environments, and it is the trout that reaches the biggest size (around 15 kg.) It feeds on aquatic and terrestrial insects in larval or adult stages, crustaceans and fish, mainly in the case of adult specimen.

LAND-LOCKED SALOMON (Salmo salar sebago)

Fishing Season: November through March.

Native of Lake Sebago, it was introduced at the beginning of the century in numerous environments. At present it is only found in some of them. It is silver color, with blue head and back, black spots on the flanks and dark dorsal fins with blue stripes.

The term "land-locked" refers to its behavior in fresh waters, since in hydric systems close to the sea, this species alternates between salt and fresh water at different moments of its life cycle.
It is easily taken for a brown trout, but it has a smaller mouth, since its maxillary does not usually surpass the back rim of the eye.

PERCH (Percichtys spp)

Fishing Season: November through March.

There are three species of Perch: Perca Boca Chica, Perca Bocona, and Perquina Espinuda. Its most outstanding characteristic is the presence of a single dorsal fin with the first radios transformed into strong sharp fish-bones.

It has a protractile mouth, ventral fins, and an olive green back that gets paler on the flanks and pale yellow on the abdomen. It is found in numerous environments in the province, and it represents the only species that was not introduced by man. The big-mouthed species may occasionally surpass the 4 kg.