|Productivity, exploitation and fishing technology of inland open-water fisheries, Bangladesh. Consultancy report. (1995)|
i). Many gears are found to be less durable due to incorrect selection of netting materials. Improper selection of netting materials also reduces fishing efficiency of the gear. Therefore, strong and long lasting fibres or twines should be made available to the net factories as well as to the fishermen at a reasonable cost.
ii). Some of the nets are found to be deformed and as such they do not set properly and affect the catch efficiency. Proper framing of the net should be done at the time of preparation of the net. Care should also be taken in the uniform distribution of floats and sinkers along the head line and ground line respectively of the net. A hanging coefficient of 0.5 should be given when rigging the nets i.e. , 200 m stretched webbing net is to be hung to 100 m of rope.
iii). For the purpose of unification of net use for different habitats and for optimum exploitation of the fish stocks on a sustainable basis a thorough study should be carried out to help restrict the number of types of gear for commercial fishing by discouraging and discarding the inefficient and destructive types of gears.
iv). Research programme should be undertaken to improve the fishing efficiency of the existing gear for different types of habitat and fishes. A research proposal on the Improvement of hilsa (H. ilisha) fishing gears and crafts of the Meghna river in enclosed here with (Appendix 11)
v). Conservation of fish and prevention of overfishing mainly depend on the regulation and optimization of mesh-size. It is essential that optimum mesh size should be evolved.
vi). Net preservatives, colouring materials and the diameter of the thread or twine be evaluated with a view to ascertaining appropriate colour, preservatives and diameter of the thread.
vii). A standard boat building yard should be established for construction of fishing crafts according to modern design with the provision of supplying strong, durable, lighter and well seasoned wood to the boat building yards and private boat making entrepreneurs at a reasonable price.
viii). Training should be imparted to the fishermen, and fish farmers on the fishing technology, net making, rigging and operation of different kinds of gear in an efficient manner and to the private boat making entrepreneurs on improved designing and construction of fishing crafts. A tentative training programme for the fishermen and boat builders is enclosed herewith (Appendix 10).
ix). There needs to be a provision of soft and easy credit facilities with relatively low interest for the fishermen and fish farmers groups to buy suitable crafts and gears and for the boat building entrepreneurs.
x). Awareness should be generated among the fishermen about the destructive effects of illegal nets on the fish stock.
For conservation of the hilsa stock, catching of juvenile hilsa should immediately be stopped by banning the use of these destructive gears from 15th February to 15th May in jatka catching areas of Meghna and Padma and December to January in coastal regions.
To protect the brood fish of Hilsa ilisha, fishing of hilsa should be prohibited by any gears during the months of September to October (at least 3 days before and after the new and full moon) in the lower stretches of Meghna river (Hatia-Sandwip-Monpura) where the fish spawn during this period.
Awareness should be generated among the fishermen about the destructive effects of the use of illegal gears on the fish stock and catch through a series of training and wide publicity.
xi). Insurance scheme should be introduced for nets and crafts to support repair and replacement of these gears.