Explain composite fish culture. Write advantages and disadvantages of composite fish culture.

Dear Student.
Please find below the solution to the asked query.

Composite Fish Culture System:
 
Sometimes fish culture is done in combination with rice crops so that fish grow along with paddy in the standing water. Both local & imported varieties of fish can be used in such systems.
In such a system, 5/6 species of fish are selected & reared in a single fish pond. The species are selected on the basis of their feeding habits and  they should not compete for food & should not kill each other in the pond.
 
Three different varieties are
   
Surface feeders- Catla
Middle zone- Rohu
Bottom feeders- Mrigals & Carps 
 
Advantages:-
 
Fish do not compete for food
Food available in different zones is utilized
Carps consume only aquatic weeds
Very high yield is obtained
  
Disadvantages:-
 
Many fish breed only in the rainy season so hormonal stimulation has to be given.
Good quality seeds  are not available.
 
Hope this information will clear your doubts about the topic.
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Regards.