Rearing of shell fishes was first carried out by

Options

A. Japanese
B. Romans
C. Britishers
D. Swedes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the historical origins of shellfish rearing, specifically who first practiced it.

2. **Identifying the Options**: The options provided are:
- Japanese
- Romans
- Britishers
- Swedes

3. **Researching Historical Practices**: To answer the question, we need to look into the history of aquaculture, particularly focusing on shellfish farming.

4. **Finding Relevant Information**: Historical records indicate that oyster farming, a form of shellfish rearing, was practiced by the ancient Romans. This practice dates back as early as the first century BC on the Italian peninsula.

5. **Evaluating Other Options**:
- The Japanese have a rich history of aquaculture, but their practices developed later.
- The Britishers and Swedes also have histories of aquaculture, but they did not pioneer shellfish rearing.

6. **Conclusion**: Based on the historical evidence, the correct answer is that the rearing of shellfish was first carried out by the Romans.

**Final Answer**: Romans

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