Near the beginning of the film McLeod is seen poaching salmon in the river. The fish caught is a salmon, but the underwater shot is that of a perch or zander.
Norman rides his bicycle in the rain to the shop where he intends to send the telegram informing the poachers that the river will be full of fish due to the rain, but when he enters the shop his clothes are dry.
Set on a Scottish island with a poor road and only 4 cars for the inhabitants and served by a passenger ferry . yet the poachers arrive more than once with a car and a lorry.