(1) A person must not traffic in fish without lawful excuse.(2) For the purposes of subsection (1) , a person is taken to traffic in fish without lawful excuse if (a) the fish have been taken unlawfully or possessed unlawfully; and(b) on one or more occasions, the person (i) possesses the fish; or(ii) conceals the fish; or(iii) processes the fish; or(iv) sells or otherwise disposes of the fish; or(v) receives or delivers the fish from or to another person; or(vi) transports the fish from one place to another; or(vii) otherwise deals with the fish; or(viii) carries out any combination of the activities referred to in this paragraph.(3) For the purposes of subsection (2) (a) it does not matter whether the fish referred to in that subsection are all of one species or a mixture of different species; and(b) a person is taken to have carried out an activity if the person (i) carries out, or participates in the carrying out of, the activity; or(ii) directs, controls or supervises the carrying out of the activity; or(iii) provides finance, facilities or other resources to enable the activity to be carried out or to facilitate it; or(iv) is knowingly concerned in the carrying out of the activity.