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From: Chief Editor

Date: 18-12-2021 15:54:03

The function of the adipose fin of salmonids has been long debated. Various hypotheses were considered: vestigial? Reproductive? No function? Considering that evolution is very fast is dismissing useless features, the logical conclusion was that it must have a very good reason to be there. Scientistic discovered several large nerves entering the fin. Based on this information, the adipose fin may work as a mechanosensor: mechanical deflection by water currents stimulates specific nerves, in all effects a precaudal sensor. Amputation of the adipose fin has been a marking technique in salmonids hatchery. Now, the amputation of the adipose fin of juvenile salmonids has been shown to compromise swimming efficiency in turbulent waters.

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