Cred ca de aici vine denumirea:
Shad
From Wikipedia, the free encyclopedia
The
shads or
river herrings make up the genus Alosa, fish related to herring in the family Clupeidae. They are distinct from others in that family by having a deeper body and spawning in rivers. Several species can be found on both sides of the Atlantic Ocean and Mediterranean Sea. Alosa can also be found throughout the Caspian Sea.[2] Many are found in freshwater during spawning and some are only found in landlocked freshwater.
Concluzia mea este ca nalucile artificiale din silicon care imita pestii au capatat denumirea de shaduri. (presupun ca initial au fost imitati heringii dupa care si alte specii, dar n-am nicio certitudine)