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JSS2: AGRICULTURAL SCIENCE - 3RD TERM

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  1. Fishery & Fishing Tools | Week 1
    3 Topics
  2. Classification of Fishes | Week 2
    2 Topics
    |
    1 Quiz
  3. Conditions Necessary for Siting a Fish Pond | Week 3
    9 Topics
  4. Processing and Preservation of Fish | Week 4
    3 Topics
  5. Risk factors in Water and Fish Farming | Week 5
    4 Topics
    |
    1 Quiz
  6. Forest & Forest Uses | Week 6
    3 Topics
  7. Forests and Forest Uses II | Week 7
    3 Topics
  8. Forest Resources | Week 8
    3 Topics
  9. Effect of Forest on the Environment | Week 9
    3 Topics
    |
    1 Quiz



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Topic Content:

  • Classification of Fishes
  • Based on their Habitat
  • Based on their Morphology

The various species of fish found in oceans, lakes, rivers and streams have evolved over millions of years and have adapted to their preferred environments over long periods of time.

fish
External parts of a fish.

Fishes can be classified based on the following groups;

(a) Based on their Habitat:

A habitat is a place where an organism lives. Fishes live either in freshwater or saltwater.

Fresh Water Fishes:

This is water that has no salt e.g. rivers, streams, ponds, springs, etc. The fishes present are trout, piranha, pike, carp, perch, tilapia, salmon, mudfish, and catfish. Freshwater fishes cannot survive in saltwater.

Trout
Trout.
fresh water fish
Different types of freshwater fish.

Salt Water Fishes:

 

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