Home
Class 9
BIOLOGY
What are the advantages of composite fis...

What are the advantages of composite fish culture?

Text Solution

Verified by Experts

The correct Answer is:
N/a

Composite fish culture is also called polyculture of fishes. It is advantageous, economical and profitable from business point of view. It yields about 8-9 times more production as compared to monoculture. In composite fish culture, 5 or 6 speciess of fast growing fish are cultured in single fish pond which do not compete with each other for space and nutrition. They live in distinct zones inside the pond and have distinct feeding habits. For example, a highly yielding Indian fish pond may contain following six species of fishes : 1. Silver carp which is a surface feeder and feeds on phytoplankton, 2. Catla which is also a surface feeder but it feeds on zooplankton, 3. Rohu which is column feeder and it feeds on detritus, 4. Grass carp which feeds on aquatic plants (including weeds), 5. Mrigal which is a bottom feeder and it feeds on detritus, and 6. Common carp which is omnivorous bottom feeder.
Promotional Banner

Topper's Solved these Questions

  • IMPROVEMENTS IN FOOD RESOURCES

    LAKHMIR SINGH & MANJIT KAUR|Exercise FORMATIVE ASSESSMENT|1 Videos
  • IMPROVEMENTS IN FOOD RESOURCES

    LAKHMIR SINGH & MANJIT KAUR|Exercise FILL IN THE BLANKS|3 Videos
  • DIVERSITY IN LIVING ORGANISMS

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based|5 Videos
  • MODEL TEST PAPER 1

    LAKHMIR SINGH & MANJIT KAUR|Exercise SECTION B|1 Videos

Similar Questions

Explore conceptually related problems

What are advantages of manure ?

What are the advantages of cross pollination?

What are the advantages of transpiration ?

What are the main advantages of a dam.

What is the advantage of leucocytosis?

LAKHMIR SINGH & MANJIT KAUR-IMPROVEMENTS IN FOOD RESOURCES -VERY SHORT ANSWER QUESTIONS
  1. What are the advantages of composite fish culture?

    Text Solution

    |

  2. Mention the crop whose production has increased by blue revolution and...

    Text Solution

    |

  3. What are plant nutrients ?

    Text Solution

    |

  4. Name the three most important mineral elements required for plant grow...

    Text Solution

    |

  5. What are the micronutrients required by the plants ?

    Text Solution

    |

  6. Name any two macronutrients required by plants.

    Text Solution

    |

  7. Which one is nutrient specific-fertilizer or manure ?

    Text Solution

    |

  8. Which is the oldest method of crop improvement ?

    Text Solution

    |

  9. Name one common disease of paddy.

    Text Solution

    |

  10. Give an example of biological weed control.

    Text Solution

    |

  11. Give one example of natural insecticide.

    Text Solution

    |

  12. What are weeds ?

    Text Solution

    |

  13. Write down two harmful effects of biotic factors on food grains.

    Text Solution

    |

  14. What percent of moisture should be present in the food grains at the t...

    Text Solution

    |

  15. Give one example of solid and one of liquid fumigant.

    Text Solution

    |

  16. Which method is most effective for destroying insects in stored grains...

    Text Solution

    |

  17. How the food grains should be dried on commerical basis ?

    Text Solution

    |

  18. What is feed ?

    Text Solution

    |

  19. Name one (a) Leguminous green fodder, (b) Non-green dry fodder.

    Text Solution

    |

  20. Name one high yielding breed of cow and one of buffalo respectively.

    Text Solution

    |

  21. What are fat content in milk of: (a) Murrah, (b) Surti ?

    Text Solution

    |