Question

Which of the following fish in introduced in pond to control or eliminate
the vector responsible for the transmission of malaria and filariasis?
(A) Exocoetus
(B) Pristis
(C) Scoliodon
(D) Gambusia​

Answer 1

Answer:

(B) Pristis

Explanation:

Answer 2

The correct answer is option (D) Gambusia.

• Gambusia or mosquitofish are Larvivorous fishes that are used as a natural method of controlling mosquitoes that are vectors of malaria and filariasis.
• Mosquitoes lay eggs in stagnant water.
• They consume the larvae of mosquitoes and other aquatic animals.
• Mosquitofish can eat up to 100 larvae a day.
• Gambusia is introduced in ornamental ponds, unused or out-of-order swimming pools, or animal water troughs.
• Exocoetus is a class of marine bony flying fish.
• Pristis is a genus of sawfishes.
• Scoliodon is the genus of cartilaginous fishes.
• The common name of scoliodon is dogfish because of its highly evolved dog-like sense of smell to search for food.
• Hence, the correct answer is Gambusia.

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