* Salmon are primarily found in the North Atlantic and North Pacific Oceans, as well as their tributaries. They are anadromous fish, meaning they migrate from saltwater to freshwater to spawn.
* Trout are primarily found in temperate regions of the Northern Hemisphere, in cold, clear, and oxygen-rich waters.
The Amazon River, located in the tropics, has very different conditions than the environments where salmon and trout thrive. The water is warm, murky, and has a lower oxygen content.
The Amazon River has its own unique fish species, including:
* Piranhas
* Arapaima
* Electric eels
* Catfish
* Discus
While these species might share some similarities in appearance with salmon and trout, they are entirely different species adapted to the Amazon's unique environment.