Is the most common Salmonid species around the world and can be found through America, Asia, Europe and Africa.
Its great adaptability to different environmental conditions and physical resistance has let it to become the choicest trout for human consumption and cultivation.
As in other salmonid species, rainbow trout exhibit a wide range of coloration’s, skin patterns, sizes and shapes, all related to their adaptation to their environment and to their lifecycle stage.
The breeding season generally intensifies coloration, especially in males.
In females, changes of coloration and body shape are not that evident.

While not known for its swimming speed, it’s very robust and strong.
It has broad fins, thick caudal peduncle and large mouth, all characteristics of an aggressive predatory species.
There are many stories of brown trout feeding of unusual prey as birds, rodents and even fish trying to escape fisherman’s hook.
The red spots on the sides of the body are distinctive of juveniles, while only a few strains maintain them in their adult life.
This is especially true of browns that live all year round in the same place, mainly streams or small rivers.
On the contrary, migratory varieties of these species tend to have fewer spots, instead showing a range of lighter colors and even silvery tones.

Brook trout originated in eastern North America, but are now widely distributed in Europe, South America and South Asia, where is common to find them near spring creeks.
They are usually found in environments with colder and oxygenated waters, although in their adult life is common to find them in larger rivers and lakes.
A useful detail for distinguishing a brook trout from a brown trout or rainbows is the sequence of the colors on their pectoral, pelvic and anal fins.
It doesn’t matter if the trout is young or if it lives in a lake where it develops a silvery body color, this fins are always outlined in a white border, followed by a black fringe and finally by a red color, which is brightest and most notable in males.

The Atlantic salmon (Salmo salar) is well distributed throughout much of the world.
As one of the most profitable fish to raise commercially, there is an enormous industry surrounding them.
The “landlocked” salmon refers to a fish that resides permanently in fresh water.
This species has stricter requirements for suitable habitat compared to rainbow or brown trout, and competes strongly with both species when they share a habitat.
This helps to explain why the salmon’s geographic distribution is more restricted even though escapees from commercial pens are very common.
Atlantic salmon can be differentiated by their larger pectoral fins and the distinct V shape of their tails.

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