Ohio Rev. Code § 1743.09: Fishery companies.

When a company organized for the purpose of propagating fish and establishing fisheries in this state acquires the right to use any stream, canal, or reservoir from the owner of the land adjoining thereto, for the establishment of a fishery to be owned, maintained, and used for the purpose of propagating fish, no person shall fish from such stream, canal, or reservoir without first obtaining authority from such company. A person who violates this section shall be liable to such company in trespass, and to the fines authorized by law against persons trespassing upon lands.

The navigable streams and public canals in this state are not subject to this section, and this section does not cut off the privilege of any person to use or fish from any lake, river, stream, or reservoir which by custom has been used for fishing.