"In the case of fishing for trout and other freshwater fish, the general rule is that fishing without permission is a civil rather than a criminal offence. However, unauthorised fishing can be made the subject of criminal proceedings under the Theft Act 1607, where any person removing fish from a stank - any artificial pond or reservoir which has been stocked and has neither inlet nor outlet - without authority is guilty of theft."
"The remaining exception from the general rule of fishing for freshwater fish without permission applies in those waters that flow into the Solway, except for the River Annan. In these rivers, the provisions of section 9 of the Solway Act 1804 make it an offence to fish for any fish without the permission of the landowner or occupier."
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