4.—(1) A person guilty of a relevant offence shall be liable—
(a)on summary conviction, to a fine not exceeding the statutory maximum;
(b)on conviction on indictment, to a fine.
(2) The court by or before which a person is convicted of a relevant offence may also—
(a)order the forfeiture of any fish in respect of which the offence was committed, or, on summary conviction only, impose a fine not exceeding the value of any fish in respect of which the offence was committed; and
(b)order the forfeiture of any net or other fishing gear in respect of which the offence was committed, or which was used in committing the offence, or which was used for catching any fish in respect of which the offence was committed.