Largest freshwater ever caught would have to be a sturgeon or alligator gar, both of which have tipped the scales at well over 200lbs in different areas of the world.
Saltwater is the same thing, marlins and tunas have tipped the scales at well over 1000lbs and there are defiantly bigger fish roaming the oceans of the world.
BTW AJ, The current world record striper was taken from a jetty down in Atlantic City, NJ and was a mere few ounces shy of 70lbs.