Esox americanus...both subspecies side by side

The American pickerels are two subspecies of ''Esox americanus'', a medium-sized species of North American freshwater predatory fish belonging to the pike family:
* Redfin pickerel, sometimes called the brook pickerel, ''E. americanus americanus'' Gmelin, 1789;
* Grass pickerel, ''E. americanus vermiculatus'' Lesueur, 1846.