The brook trout is a fish, belonging to the order of the salmoniformes and the family of the salmonidae. It is also known as eastern brook trout, speckled trout and square tail, its scientific name is salvelinus fontinalis. A migratory population of the species that inhabits lake superior is called mountain trout. The brook trout is a very popular fish due to its large size.
Characteristics of the arroyo trout
Arroyo trout has a long, streamlined body with a large mouth that extends beyond the eye. Color variations include olive, bluish gray or black above with silvery white belly and worm-like markings along the back. They have red spots sometimes surrounded by blue haloes on their sides. The lower fins have a white front edge followed by black and the rest are reddish orange. The tail fin is square or slightly bifurcated. During the autumnal breeding period, brook trout males will develop a slightly hooked jaw and will turn very bright orange-red along the undersides, which is highlighted by a black vertical stripe along the belly.
1 – size of arroyo trout
This species of trout can measure between 25 to 40 centimeters long.
2 – weight of the arroyo trout
The weight of the arroyo trout is approximately 1 kilogram.
3 – food of arroyo trout
These carnivorous fish feed on several species of small fish, insects, crustaceans, molluscs and other invertebrates. Your diet may also include small amphibians such as frogs and aquatic mammals such as voles. It is also known that they occasionally feed on their own eggs and even juveniles. Young fish of this species feed on small insects.
Where are the trouts of arroyo found?
This species is native to the eastern regions of north america. They are usually found at high altitudes and their distribution extends from the appalachian mountains in the south to the northern parts of georgia and canada. The eastern range extends from the hudson bay basin to the upper mississippi river, the great lakes-st lawrence system and iowa in the west.
How long does an arroyo trout live?
Its life time ranges between 5 and 7 years.
Behavior of the trouts of arroyo
These trout are more active during dawn and dusk.
They tend to spend the midday hours in deeper water, since they prefer adequate aerial protection during these hours.
Despite being generally cautious and timid in their nature, brook trout are considered aggressive predators.
It is known that some populations of brook trout migrate to the sea during the spring and remain there for about three months.
The migratory populations, known as “salinas” or “corridas de mar”, always remain a few kilometers from the mouth of the river during their migration to the sea.
Reproduction of the trouts of arroyo
Both males and females reach reproductive maturity once they reach 1 year of age. It is known that the species reproduces once a year with specific spawning location requirements. They reproduce in the sandy areas at the bottom of the water. A submerged spring or an area where water passes through gravel or sand is the most important natural requirement for its reproduction. The females build a bed of spawning or “reddish” using their tails where they lay the eggs so that the males can fertilize them. The females lay between 100 and 1000 eggs depending on their size.