(b)take samples of any fish seed of any notified kind or variety from,(i)any 'hatchery' or 'fish seed farm' or any person selling or offering to sell such fish seed; or(ii)any person who is in the course of conveying or delivering or preparing to deliver such fish seed to a purchaser. or a consignee; or(iii)a purchaser or a consignee after delivery of such fish seed to him