The Commission, without notice and hearing required by § 28.2-232, shall revoke all licenses and the fishing privileges within the Commonwealth’s tidal waters to take or catch fish, shellfish, or marine organisms, issued to any person convicted of unlawfully taking oysters or other mollusca from the public grounds, any riparian oyster planting grounds assigned pursuant to Article 1 (§ 28.2-600 et seq.) of Chapter 6 of this title, or any general oyster planting ground leased pursuant to Article 2 (§ 28.2-603 et seq.) of Chapter 6 of this title. No new licenses shall be issued to such person for a minimum of six months or a maximum of five years after such conviction in the discretion of the Commission.