Give its any two disadvantages. Composite fish culture system involves the culture of several species of fish at a same time in a same pond. It is adopted for intensive fishing to increase the fish yield. Lack of availability of good quality fish seeds.
What are advantages and disadvantages of composite fish culture?
Some of the Advantages of composite fish culture include: 1) Various species of fishes are cultured altogether. 2) Ensures complete utilization of food in pond. 3) Increase in fish yield.
What is composite fish culture what is IT’s problem and how is it overcome?
one problem with composite fish culture is that many of these fishes breed only during monsoon . the fish seed collected can be mixed with that of other species . … this problem can be overcome by breeding fish in ponds using hormonal stimulation. this ensures the supply of pure fish seed in desired quantities.
What are the advantages of composite fish culture state one demerit with composite fish culture system How is this problem overcome?
Such a system increases the fish yield. A major problem with this system is that many of these fishes breed only during monsoon. However, the use of hormonal stimulations has provided a solution for this problem. An advantage of composite fish culture is that it increases the yield of fish.
What are the advantages of composite fish?
An advantage of composite fish culture is that it increases the yield of fish. Nearly, five or six different species are grown together in a single fish pond. The survival rate of fish increases and their yield also increases without affecting the other species.
What are two advantages of composite fish culture?
Advantages of composite fish culture : (i) It helps to get a variety in fish yield. (ii) Food in the pond gets evenly used up due to different varieties of fish having different food habits present in a pond. (iii) Fish do not compete for food as all type of fish get their kind of food.
What is difference between polyculture and composite fish culture?
Composite Fish Culture or Polyculture or Mixed Fish Farming is called stocking of cultivable fish of different species that vary in feeding habits in the same pond. In other words, polyculture or composite fish culture is called the combined or mixed farming of compatible fish species.
What are the objectives of composite fish culture?
Fuller utilization of the pond’s productivity for maximization of fish yield, the aim in composite fish culture, is achieved through intensive culture of fast-growing, compatible fish species with complementary feeding habits occupying different ecological niches in the pond.
What is the composite fish culture?
Composite fish culture is a most popular technique to obtain maximum yield of fish from a pond/reservoir. The technology involves employment of compatible and non-competing fish culture through utilisation of different feeding zones of the pond or reservoir, resulting maximum production of fish per unit area of water.
What is composite fish culture What are the advantages of composite fish culture?
An advantage of composite fish culture is that it increases the yield of fish. In a composite fish culture, five or six different species are grown together in a single fish pond. … As a result, the survival rate of fish increases and their yield also increases.
What is composite fish culture give example?
What are the advantages of composite fish culture? Answer: … Such a system improves the fish yield. Example: Catla feed on the water surface, rohu are feeders for the middle region, mrigal and common carp are feeders for the bottom and grass carp feeds on weeds.
What is the difference between capture and culture fishery?
Capture fishery involves catching fish directly from water bodies i.e. lakes, sea, ponds, etc. Culture fishery involves growing, rearing, and then capturing of fishes from fish tanks. The capture is done from natural water bodies such as oceans, rivers, lakes, and ponds.
What is the importance of fish culture?
Aquaculture is also considered to be a potential source of employment for poor farmers and displaced capture fishermen. Rapid development of aquaculture has already generated considerable employment through culture of marketable fish, fish seed production, and marketing of fish and fish seed.
How are fish obtained Class 9?
Fish can be obtained by two ways: (i) Capture fishing: It is the process ofobtaining fish from natural resources. (ii) Culture fishery: It is the practice of farming fishes. Farming can be done in both freshwater ecosystem (which includes river water, pond water) and marine ecosystem.