After entering fresh water, salmons fight hard to go to the spawning area to lay eggs, so by the time they turn red, it was the time they start laying eggs and then they go to heaven shortly.

• 在游入淡水后；鲑鱼搏命到产卵区去下卵；因此在它们变红之际；就是它们下卵之始期；然后不久就到天堂报到了.