Which of the following is not true

Options

A. fish meal is rich source of protein for cattle and poultry
B. fish meal is produced from the non-edible parts of fishes
C. silver revolution is increases in fish production
D. shagreen is the dried of skin of shark

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks us to identify which statement among the given options is not true.

2. **Analyzing Each Statement**:
- **Statement 1**: "Fish meal is a rich source of protein for cattle and poultry."
- This statement is true. Fish meal is indeed a rich source of protein derived from fish.

- **Statement 2**: "Fish meal is produced from non-edible parts of fishes."
- This statement is also true. Fish meal is made from parts of fish that are not suitable for human consumption, such as bones, gills, and fins.

- **Statement 3**: "Silver revolution is increased in fish production."
- This statement is not true. The Silver Revolution refers to the increase in egg production, not fish production. Fish production is associated with the Blue Revolution.

- **Statement 4**: "Shagreen is the dried skin of shark."
- This statement is true. Shagreen is indeed made from the dried skin of sharks and is used for various purposes, including polishing.

3. **Conclusion**: The statement that is not true is Statement 3: "Silver revolution is increased in fish production."

### Final Answer:
The statement that is not true is: **"Silver revolution is increased in fish production."**

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