I ran accross this article on Mackerel in the NE. I thought Tinker Mackerel were like Juvie Pogies, just smaller (younger) versions of the same animal. However this is incorrect; this is an excerpt from:
<a href="http://www.alloutdoors.com/aolibrary/fishing/salt/holymackerel.asp" target="_blank"><!--auto-->http://www.alloutdoors.com/aolibrary/fishing/salt/holymackerel.asp</a><!--auto-->
There are actually two species of mackerel occurring in our waters. The larger Atlantic Mackerel (Scomber scombrus), which generally attains a length of 14-18 inches and weight of 1-2 pounds. They can get considerably larger and there is a record of a 7 1/2-pound fish. The smaller tinker mackerel (Scomber colias) are usually only 8-14 inches. They possess spots and blotches on the sides and have a swim bladder, both of which are lacking in the Atlantic Mackerel. Smaller Atlantics are sometimes referred to as "Tinkers", but if you want to be precise, look for the spots.
<a href="http://www.alloutdoors.com/aolibrary/fishing/salt/holymackerel.asp" target="_blank"><!--auto-->http://www.alloutdoors.com/aolibrary/fishing/salt/holymackerel.asp</a><!--auto-->
There are actually two species of mackerel occurring in our waters. The larger Atlantic Mackerel (Scomber scombrus), which generally attains a length of 14-18 inches and weight of 1-2 pounds. They can get considerably larger and there is a record of a 7 1/2-pound fish. The smaller tinker mackerel (Scomber colias) are usually only 8-14 inches. They possess spots and blotches on the sides and have a swim bladder, both of which are lacking in the Atlantic Mackerel. Smaller Atlantics are sometimes referred to as "Tinkers", but if you want to be precise, look for the spots.