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 a composite fish culture?
Fish culture in which compatible and non-competing fishes are cultured simultaneously through the utilization of different feeding zones.
What is composite fish culture system explain with example?
Composite fish culture is a method in which five or six different types of fish species are grown together in a single fish pond. Fish with different food habitats are selected so they don’t fight with each other for food. … Such a system improves the fish yield.
What is composite fish culture write its two advantages?
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 composite fish culture write its advantages and disadvantages?
Composite fish culture is the method to culture five or six species, both indegenous and exotic, together in a single fish pond. 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.
What is the major problem in composite fish culture?
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 . thus ,a major problem in fish farming is the lack of availability of good quality seeds . this problem can be overcome by breeding fish in ponds using.
What are the disadvantages of composite fish culture?
Some fishes rear only during monsoon. Difficulty in recognising which seed belongs to which of the species. Lack of availability of good quality seeds. To breed fishes using hormonal stimulation.
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 are the types of fish culture?
(i) freshwater pond culture; (ii) rice-fish culture or integrated fish farming; (iii) brackishwater finfish culture; (iv) mariculture involving extensive culture and producing fish/shellfish (e.g., oysters, mussels, cockles) which are sold in rural and urban markets at relatively low prices.
Which fish are bottom feeders in composite culture?
The column feederf fish used is rohu (Labeo rohita). The bottom feeders used are mrigal (Cinhina mrigala) and common carp, Thus, the correct answer is ‘Catla catla.
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 is the importance of fish culture?
A healthy diet, high in protein is necessary to ensure that growing population does not succumb to sickness and disease. Aquaculture is required to ensure a consistent supply of aquatic species for human consumption.
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.
What are the advantages of Class 9 composite fish culture?
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 do you understand by composite?
A composite material is a combination of two materials with different physical and chemical properties. When they are combined they create a material which is specialised to do a certain job, for instance to become stronger, lighter or resistant to electricity.