SS FISHERY LESSON NOTE CULTURE FISHERY Culture fishery is also known as aquaculture and its can be defined as the rearing or raising or cultivation of aquatic animals and those aquatic organisms that are economically and commercially important under a controlled environment for maximum yield. This can also be said to be the manipulation of the certain cultivable fish and other aquatic organisms under monitored environment for maximum yield. Since capture fishery is all about exploitation of natural habitat of aquatic organisms without keeping back the fish-seed which are fingerlings, culture fishery in another way tries to prevent the exploitation of aquatic habitat by manipulating the seed (fingerlings) for maximum yield. For aquaculture to effectively manipulate the seed offish for effective yield, there are some qualities to consider while working on the fish to be selected as culturable fish species. QUALITIES OF CULTURABLE FISH SPECIES 1. Fast growth 2. Acceptability of supplementary feeds 3. Resistance to diseases 4. Tolerance to poor water quality 5. Must be popular and marketable within the community 6. Low cost of production 7. Easy to breed in captivity 1. FAST GROWTH For fish to be accepted to be cultured in pond or other culturing facilities, the growth rate of such fish must be fast because the essence of aquaculture is to supply the aquatic products to the teaming population at a fast rate as
possible. Therefore, the growth rate of the desired fish must be put into consideration. 2. ACCEPTABILITY OF SUPPLEMENTARY FEEDS: Supplementary feeds or artificial feeds aid the fast growth of cultured fishes because the feed contains high level of balanced diet the can aid the fast growth of the fish. Therefore, for fish to be considered as culturable, it must accept artificial feed. 3. RESISTANCE TO DISEASES: There is a possibility of disease outbreak in a culture medium where fish are being cultured due to water supply and high population in a containment. Therefore, the ability of the culturable fish species to have resistance to such disease outbreak makes the species good for domestication or culturing. This is also known as hardiness. 4. TOLERANCE TO POOR WATER QUALITY: Fish that can be considered as culturable must tolerate poor water quality as the population offish in a containment is higher than the population offish in the natural habitat, therefore the water quality in the containment maybe lesser than the quality in the natural habitat.