In Great Britain, it is illegal to suspiciously hold a salmon. Sorry pescatarians.
This statue seems pretty suspicious to me...
The Salmon Act 1986 is an Act of Parliament of the United Kingdom which regulates salmon fishery.
In legislation.gov.uk it states that the Act is “an Act to make fresh provision for the administration of salmon fisheries in Scotland; to provide as to the licensing and regulation of salmon dealing in Scotland and in England and Wales; to provide for, and as respects, certain offences in the law of Scotland and in the law of England and Wales in connection with salmon”.
So yeah, think twice before suspiciously holding a salmon in the U.K.