Fish become ‘young’ again after spawning

Herring spawn. Photo by Moosealope, Flickr.

The physical relief that temperate fish like cod and Atlantic herring experience after they spawn for the first time allows them to breathe in more oxygen and develop a voracious appetite, all of which leads to a rapid increase in body weight. New research published in Environmental Biology of Fishes turns on its head…

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Keep Growing – Fish’s growth is not reduced by spawning

Contrary to what is stated in biology textbooks, the growth of fish doesn’t slow down when and because they start spawning. In fact, their growth accelerates after they reproduce, according to a new article published in Science. The paper is a technical comment by Dr. Rainer Froese, senior scientist at the Geomar Helmholtz…

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