Which of the following fish selectively feed on larva of mosquito : -

Options

A. Gambusia
B. Rohu
C. Clarias
D. Exocoetus

Answer

To solve the question "Which of the following fish selectively feed on larva of mosquito?", we can follow these steps:

### Step 1: Understand the Concept of Larvivorous Fish
- **Definition**: Larvivorous fish are species that feed on the larvae of mosquitoes. They play a crucial role in controlling mosquito populations and, consequently, the spread of mosquito-borne diseases.

### Step 2: Identify Common Larvivorous Fish
- **Examples**: Some well-known larvivorous fish include:
- Gambusia (commonly known as mosquito fish)
- Panchax
- Haplokitis
- Trichogaster

### Step 3: Analyze the Options Given
- We need to evaluate the options provided in the question to determine which fish are larvivorous.
- The options mentioned in the transcript include:
- Gambusia
- Rohu (Labio rohita)
- Clarius (Mangur)
- Exocetus (flying fish)

### Step 4: Determine Which Fish Feed on Mosquito Larvae
- **Gambusia**: This fish is known for its larvivorous behavior and is often introduced in water bodies to control mosquito populations.
- **Rohu**: This is an edible freshwater fish but does not feed on mosquito larvae.
- **Clarius**: Also an edible freshwater fish, it does not consume mosquito larvae.
- **Exocetus**: Known as the flying fish, it is also not a larvivorous fish.

### Step 5: Conclusion
- Based on the analysis, the only fish from the options that selectively feeds on mosquito larvae is **Gambusia**. Therefore, the correct answer is **option number 1: Gambusia**.

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