Gambusia is a

Options

A. Pest on fishes
B. Pathogenic fish
C. Parasitic fish
D. Fish predator of mosquito larvae

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: Gambusia is a type of fish. It is important to recognize that it belongs to the class of animals known as Chordates, specifically within the group of bony fishes.

2. **Understand the Reproductive Method**: Gambusia is unique because it is viviparous, meaning it gives birth to live young instead of laying eggs. This distinguishes it from many other fish species that reproduce through external fertilization and egg-laying.

3. **Common Name**: Gambusia is commonly referred to as "mosquito fish." This name is derived from its diet, which primarily consists of mosquito larvae.

4. **Ecological Role**: Gambusia plays a significant ecological role by controlling mosquito populations. By feeding on mosquito larvae, it helps reduce the spread of mosquito-borne diseases such as dengue and malaria. This makes it an important species in terms of social service and public health.

5. **Conclusion**: Therefore, Gambusia can be classified as a fish that is viviparous and serves as a natural predator to mosquito larvae, contributing positively to the ecosystem and human health.

**Final Answer**: Gambusia is a viviparous fish commonly known as mosquito fish, which preys on mosquito larvae.

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