Do all Lake Michigan salmon die after spawning?

Yes, most salmon species that inhabit Lake Michigan, such as Chinook and Coho salmon, die after spawning. This phenomenon, known as semelparity, is common among Pacific salmon, as they expend significant energy during the spawning process. After laying their eggs, the fish typically succumb to exhaustion, stress, and the physiological changes that occur during reproduction. However, some may survive for a short period post-spawning, but they generally do not live long afterward.