What fish (and/or shellfish) species with a multi-year life-cycle, besides salmon, die after spawning?

Question

Most species of salmon die after spawning. Are there any other types of fish that spawn once and then die after a multi-year life-cylce? Is this a rare life history strategy among our human exploited marine species? Googling this question only yields articles about Salmon.

Answer 1

A.Fish and shellfish with Multi-year Life Cycle That Die After Spawning :

The classic example is The Pacific salmon ( Oncorhynchus spp.) with a Multi-year and with Single Spawning( semelparous)

Other examples are:

1.Eels ( some Anguilla spp.) - The European eel( Anguilla anguilla) and American eel( A.rostrata)

2.Lampreys - some lampreys like the sea lampreys( Petromyzon marinus)

3.Some Cephalopods - (octopus, squid,cuttle fish)

4.Some Pacific cods and other rare marine species- certain species exhibit almost semelparous

traits, but it's uncommon.

5.Shell fishes( less common) - true semelparity is rare among commercially exploited shellfish.

-- Some squid- like cephalopods often harvested commercially, show semelparity.

B.How rare is this strategy among human - exploited species ?

Among fish and shellfish commercially exploited by humans, semelparity is the exception, not the

rule. Salmon,eels, lampreys, and cephalopods are the main examples.