'''Salmon''' are a polyphyletic grouping of fish in the family Salmonidae. Most salmon are anadromous, hatching out in a gravel nest called a "Red" in a fresh water stream, then swimming out to salt water and growing to full size on a marine diet. After 2–5 years (depending on species) at sea they swim back to the stream where they hatched based on a combination of magnetic navigation and an acute sense of smell. Most Salmon return to the exact stream where they hatched. | '''Salmon''' are a polyphyletic grouping of fish in the family Salmonidae. Most salmon are anadromous, hatching out in a gravel nest called a "Red" in a fresh water stream, then swimming out to salt water and growing to full size on a marine diet. After 2–5 years (depending on species) at sea they swim back to the stream where they hatched based on a combination of magnetic navigation and an acute sense of smell. Most Salmon return to the exact stream where they hatched. |