(a) It is unlawful to possess, transport, offer to transport, sell, offer to sell, receive, buy, or attempt to buy any fish regulated by the Department with knowledge or reason to believe that such fish are illicit.
(b) Fish are illicit when taken, possessed, or dealt with unlawfully, or when there has occurred at any time with respect to such fish a substantial failure of compliance with the applicable provisions of this Subchapter or of rules made under the authority of this Subchapter.