N.J. Stat. § 23:9-4: Common rights to fish

The inhabitants of the commonwealth of Pennsylvania and of the state of New Jersey shall have and enjoy a common right of fishery throughout, in and over the waters of the Delaware river above and below Trenton falls, between low-water mark on each side of said river between said states except so far as either state may have heretofore granted valid and subsisting private right of fishery.