Fishermen in Puducherry on Monday staged a black flag demonstration to protest against the Centre`s Marine Fisheries Bill. The fishermen alleged that the bill will deprive them of their livelihood rights. Fishermen from Solainagar and the coastal village of Thengaithittu held demonstrations and urged the Centre to withdraw the Bill. They also alleged that the Bill stipulated that fishing would be permitted only in earmarked areas and in certain limits. Non compliance of the provisions of the Bill would result in imposition of fine and also imprisonment. The agitating fishermen further alleged that the Bill posed a threat to fishing as an occupation.