Answer
Maryland DNR sets minimum keeper length, daily creel limits, and any seasonal guidance for northern blowfish—verify the current chart because coastwide rules update. Most visitors target legal-size fish for table use, not trophy catches. Measure total length with mouth closed.
Sources: Maryland DNR
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
