Question

Fish which can be used in biological control of mosquitoes/Larvicidal fish is

• A. Eel
• B. Carp
• C. Cat fish
• D. Gambusia.

Answer 1

The Correct Option is D

The question asks which fish can be used in the biological control of mosquitoes or as a larvicidal fish. Let's investigate each option to understand their utility in mosquito control:

1. Eel: Eels are primarily scavengers or predators of small fish and invertebrates. They do not have a significant role in controlling mosquito larvae.
2. Carp: Carps are generally bottom feeders and feed on detritus, aquatic plants, and small invertebrates. They are not known for feeding on mosquito larvae.
3. Catfish: Catfish are opportunistic feeders but are also not specifically known for larvicidal activity against mosquito larvae.
4. Gambusia: Gambusia, often known as 'mosquito fish,' are well-recognized for their ability to feed on mosquito larvae. They are a common biological control agent used in various countries to manage mosquito populations and reduce the transmission of diseases like malaria and dengue.

The correct answer is Gambusia because they are specifically used for the biological control of mosquito larvae due to their feeding habits.

In conclusion, Gambusia is the accurate choice for larvicidal control because they actively feed on mosquito larvae, hence helping in reducing mosquito population effectively.