In polyculture two or more than two species of fishes are grown together in the same water body based on their

Options

A. Size
B. Feeding habits
C. Reproductive habit
D. Mode of respiration

Answer

**Step-by-Step Solution:**

1. **Understanding Polyculture**:
- Polyculture refers to the agricultural practice of growing two or more species together in the same environment at the same time. In aquaculture, this means cultivating multiple fish species in the same water body.

2. **Identifying the Question**:
- The question asks why two or more species of fish are grown together in polyculture. The options provided are size, feeding habit, reproductive habit, and mode of respiration.

3. **Evaluating Each Option**:
- **Size**: While size may play a role in the dynamics of fish species, it is not a primary reason for their coexistence in polyculture. Different sizes do not inherently allow species to thrive together.
- **Feeding Habit**: This is a crucial factor. Different fish species may have different feeding times or diets. For example, one species may feed in the morning while another feeds in the evening. This temporal separation in feeding allows them to coexist without competing for the same food resources.
- **Reproductive Habit**: Fish can reproduce at different times, but this does not determine their ability to grow together in the same environment. Reproductive habits are not a controlling factor for their coexistence.
- **Mode of Respiration**: All fish respire similarly through gills, and this does not affect their ability to live together in a water body.

4. **Conclusion**:
- Based on the evaluation, the most logical reason for growing two or more species of fish together in polyculture is their **feeding habits**. This allows them to utilize the available resources more efficiently and reduces competition.

5. **Final Answer**:
- The correct answer is **feeding habit**.

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