漁業主任主要負責與捕撈漁業、水產養殖和魚市場相關的工作，包括規劃、管理、執法、研究、發展、貸款、培訓、指導、推廣，以及環保方面的工作；此外，亦須負責與海洋護理、海岸公園及海岸保護區相關的工作，包括規劃、管理、執法、教育、指導、研究、發展，以及環境影響評估方面的工作。 (註：可能須不定時工作或輪班工作；在新界工作及隨政府船隻或商營漁船出海工作。)

A Fisheries Officer is mainly deployed on performing planning, management, enforcement, research, development, credit, training, advisory, extension and environmental work relating to capture fisheries, aquaculture and fish market; and performing planning, management, enforcement, education, advisory, research, development and environmental impact assessment work relating to marine conservation, marine parks and marine reserves. (Note: May be required to work irregular hours or shift duties; work in the New Territories; and work on board a government vessel or commercial fishing vessel on her cruises.)