The king salmon, or Chinook salmon, takes three to seven years to reach adulthood. They release eggs or sperm cells only once before dying. Rainbow trout, a smaller species from the same ...

So people have noticed that salmon, king salmon have been returning at smaller ... they don’t lay as many eggs. Their eggs are smaller. We might expect that to affect populations,” Schoen ...

The Michigan Department of Natural Resources recently collected nearly 6.5 million wild coho salmon eggs in less than three weeks. The coho salmon eggs were collected from Oct. 15 to Nov.