Gambusia is

Options

A. Parasitic Fish
B. Pest of fishes
C. Fish predator of mosquito larva
D. A mosquito spreading yellow fever

Answer

**Step-by-Step Text Solution:**

1. **Understanding Gambusia**: Gambusia is commonly known as mosquito fish. It is a type of freshwater fish.

2. **Diet of Gambusia**: The diet of Gambusia primarily consists of mosquito larvae. This is a significant aspect of its ecological role.

3. **Ecological Role**: Gambusia is often introduced into various ecosystems as a biological control agent to help reduce mosquito populations. This makes it beneficial in controlling the spread of mosquito-borne diseases.

4. **Evaluating the Options**:
- Option 1: Parasitic fish - Incorrect, as Gambusia is not a parasitic fish.
- Option 2: Pest of fishes - Incorrect, as Gambusia does not harm other fish; instead, it helps control pests (mosquitoes).
- Option 3: Fish predator of mosquito larvae - Correct, as Gambusia feeds on mosquito larvae.
- Option 4: A mosquito spreading yellow fever - Incorrect, as Gambusia does not spread diseases; it helps control mosquito populations.

5. **Conclusion**: Based on the analysis of the options, the correct answer is that Gambusia is a "fish predator of mosquito larvae."

**Final Answer**: Gambusia is a fish predator of mosquito larvae (Option 3).

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