I was surprised to read that male salmon (at least Atlantic salmon) are referred to as cocks and the females as hens.

Another surprising thing to read was that these salmon can live many years, top record being a 64-pound salmon. This reading completely debunked my understanding of salmon. I thought (before reading the article) that all salmon, once mature, returned inland to leave their progeny and then to die. I had no idea that any kind of salmon returned after mating season to the ocean. The article was specifically about Atlantic 'sea' salmon.

Edit: Other online articles confirm what I'd believed that the salmon die after spawning. But now I'm wondering why the information in what I read last night was contradictory...