<prompt> Which is the fish is used for larva control of malaria-GambusiaAmphethisGloberulisNone  <response>: Ans. is a i.e., Gambusia Antilarval MeasuresEnvironmental controlsource reductionChemical controlBiological controlLarvicidal agentsThe most important step in reducing number of mosquitoes is to eliminate their breeding placesMethods include:a Minor engineering methods Levelling Filling Drainage of breeding placesb Water management: Intermittent irrigation Changing salinity of water making water unsuitable for mosquito breedingEmploys usage of chemical insecticides that act as larvicidesi Mineral oilsii Paris green copper acetoarseniteiii Synthetic insecticides Fenthion Chlorpyrfos AbateEmploys usage of small fish that feed on mosquito larvae Gambusia affinis Lebister reticulatus 