(1)  In any proceedings for an offence under this Act, if it is proved that –

(a) any fish were on a fishing vessel; and

(b) the fish were taken by, or were in the possession of, any person on that vessel –

it is presumed that the person took or possessed the fish for the purpose of sale.

(2)  In any proceedings for an offence under this Act, if it is proved that –

(a) any fish were at a place specified in a fish processing licence as a place at which fish may be processed under the licence; and

(b) the fish were in the possession of a person –

it is presumed that the person possessed the fish for the purpose of sale.

(3)  In any proceedings for an offence under this Act, if it is proved that –

(a) any fish were at a place in, on or from which fish were normally sold or were sold during a period of 6 months before the offence was allegedly committed; and

(b) the fish were in the possession of a person, other than a customer –

it is presumed that the person possessed the fish for the purpose of sale.