Question

The fish used for control of malaria is
1. Rohu
2. Gambusia
3. Both a) and b)
4. None of these

Answer 1

Correct Answer - Option 2 : Gambusia

Concept:

• Biological control can be defined as the process of using natural predators (natural enemies) of pests, insects, mites, etc. to control their population. 

Explanation:

• The fish Gambusia affinis (mosquito eater)  is one such bio-control agent, which feeds on mosquito larva.
• Thus it helps in checking the population of mosquitos.
• A fully grown fish can eat 100-300 mosquito larva per day.
• It serves as a great biocontrol agent for mosquitos because it is small in size, easily culturable, and can tolerate saline conditions.

Rohu:

• It is a freshwater river fish, that is commonly found in South Asian countries like India, Pakistan, Bangladesh.
• It is rich in vitamin a, b, c, and omega 3 fatty acids. It keeps the skin healthy and checks cholesterol levels.