Striped bass question :

[AndyS]

About 15 or 20 years ago if my memory serves me correctly there was a massive school of striped bass that sat off Island Beach State Park for what seemed to be months. Hundreds of party boats, charter boats as well as private boats fished this massive school day in and day out. Those fishing on the beach would reel in a bass, back out and have another angler step in, the picket fence of anglers stretched for miles. My question is do we know what strain those fish were ? Were they Chesapeake or Hudson strain ?
Fast forward to today, reading the reports of what seems to be a repeat of 20 years ago, a seemingly massive school of fish. Are these fish normally there in such numbers but outside the 3 mile limit so we rarely see them. Are these fish a Hudson/Raritan strain of fish ? Are there strains of striped bass from say Montauk or Cape Cod. Surprisingly enough as great as the fishing is say North, the waters seem somewhat barren below Ocean City New Jersey.
Are there always this many striped bass ? I am in awe reading the reports thinking about just how many fish there are really are, this has been going on for weeks. Is it food and water temps that create these massive schools of fish ?