1. ~ Fish & Fishing Activities ~
Renewable Resource:
~ Fish & Fishing Activities ~

2. Content Importance of fish to human
Cause of over-fishing and its impacts on the environment
The ways to ensure sustainability of fisheries in Hong Kong

3. Importance of fish to human – For Commercial purpose
As food supply
　．To compensate essential nutrients absent in
　　rice (protein, oil, Vitamins and minerals )
　．Less cholesterol than the other food
Marine fishing
　．To support the living of about 200 million
　　employees in related industries globally

4. Importance of fish to human – For Recreational purpose
Fishing as an outdoor activity
For appreciation and relaxation

5. Fish Protein ~
Fish protein is necessary for physical growth and maintenance (amino acids)
Fish protein is highly digestible and has favorable taste

6. Fish Oil ~
Polyunsaturated fatty acids in fish oil can decrease blood triglyceride and cholesterol
Fish helps maintain a healthy heart and lowers the risk of stroke and heart attack

7. Fish Vitamins ~
Vitamin A is present in fish as retinol, which is readily absorbed and utilized by humans
Vitamin D is present in seafood

8. Fish Minerals ~
Fish iron is necessary for hemoglobin formation in the blood
Calcium and phosphorus are essential for bone formation
Iodine avoid causing goiter and cretinism and retarding growth

9. Cause of over-fishing
Demand of fish increase as population growth of people
The massive overcapacity of fishing fleets which leads to great pressure from fisheries on the dwindling fish stocks
New technologies and fishing methods
Economic development

10. The number of marine fish catch in different year

11. Impacts on the environment
Threat to ocean health are exacerbated
Fishing down the food web ( the systematic removal of the largest top-level predators )
Cause serial depletion
Alter the composition of entire ecological communities

12. Alter the relationships of prey to predators and thereby pose risks to entire ecosystems
Global warming
Changes in ocean currents

13. The ways to ensure sustainability of fisheries in Hong Kong
Aquaculture Development
Fisheries Management & Development
Fisheries Legislation
Others

14. Aquaculture Development – by Agriculture, Fisheries and Conservation Department
To identify suitable new species with good market potential for extension to farmers (Jade Perch, Tinca sp. and Chinese Long Snout Catfish)
To develop feed formulations to replace trash fish, traditional feed for aquaculture
To provide assistance on fish culture techniques and related management problems encountered

15. New Species of Fish ← Jade Perch ↑Chinese Long Snout Catfish
← Tinca sp.

16. To provide assistance in disease diagnosis and advice on appropriate treatment measures
To provide initiatives
To conduct regular water quality monitoring at fish culture zones
To implement an enhanced phytoplankton monitoring programme

17. Fisheries Management & Development - by Agriculture, Fisheries and Conservation Department
The proposed fisheries management measures include a territorial-wide fishing license system
Artificial reefs are able to encourage growth and development of a great number and variety of marine organisms

18. To commissioned a consultancy study to examine the technical and financial feasibility of developing an offshore fishing for Hong Kong
To launch the Hong Kong Fish Net ( to help raising the public awareness on the need and importance of fisheries resources conservation in Hong Kong

19. Fisheries Legislation - by Agriculture, Fisheries and Conservation Department
The Fisheries Protection Ordinance (Cap 171) :
　．destructive fishing practices (electricity,
　　explosive, toxic substances, dredging and
　　suction devices) are banned
Electricity:
．destroy nearby small fish and planktons

20. ．destroy nearby small fish and even planktons
Explosive substances:
．destroy nearby small fish and even planktons
．destroy the related food chains and cycles of the marine ecosystem
Toxic substances:
．poison the neurosystem of the target fish
．would kill nearby small fish and other marine
　lives such as corals
Dredging and suction devices:
．affect the seabed
．damage to the fisheries resources

21. The Marine Fish Culture Ordinance (Cap. 353) :
　．require all marine fish culture activity
　　to operate under licence in designated
　　fish culture zones

22. Others Closed-fishing (April to August) Control marine water quality
　．Indicate the state of health of marine waters
　．Assess compliance with the statutory Water
　　Quality Objectives (WQOs)
　．Reveal long-term changes in water quality
　．Provide a basis for the planning of pollution
　　control strategies

23. Levels of compliance with key water quality objectives (WQOs) in Hong Kong Waters

24. The scientific vessel, the Dr. Catherine Lam
it is equipped with a satellite-aided global positioning system for accurate location of sampling stations at sea

25. ~The End~