Escalating population of Aedes aegypti may lead to cause Dengue. However, controlling their larvae by using conventional techniques like insecticides, mosquito repellents are hazardous for human health and environment. Hence, it is recommended to biologically control the mosquito larvae through ornamental fish as they are eco-friendly and cost effective. In the present study, consumption rate of Aedes aegypti larvae and other food preference of six fishes (Angel fish, Betta fish, Gold fish, Red swordtail, Molly fish and Guppy) have been observed and a comparative study has been recorded. Angel fish and Gold fish show good efficacy towards all three types of food whereas Molly fish, Fighter and Guppy exhibit good efficacy towards Aedes aegypti larvae than the rest two food items, only Red swordtail showed significant deviation in results. So, in near future these fishes can be considered as effective biological agents for controlling Aedes aegypti Larvae.

Aedes albopictus is a potential vector that is responsible for severe outbreaks of dengue and DHF. Implementing traditional methods such as insecticides and mosquito repellents are harmful to the environment and to human health. In the present study, the rate at which Aedes albopictus larvae were consumed as well as the other feeding preferences of five ornamental fishes (Guppy, Molly fish, Betta fish, Gold fish, and Angel fish) were noted and compared. While Molly fish, Fighter, and Guppy considerably prefer Aedes albopictus larvae over the other food item, Gold fish and Angel fish exhibit good efficacy toward both types of food. In the last decade of little works (use of ornamental fish) have been done to control Aedes mosquito population. Therefore, a preliminary attempt has been undertaken to include ornamental fishes as vector controlling agent.

Aedes aegypti and Aedes albopictus are the carriers of a variety of diseases such as dengue, dengue hemorrhagic fever (DHF), chikungunya, zika virus, and yellow fever. An affordable way of vector management that effectively suppresses the mosquito population for a long time is the release of larvivorous fish. In this work, ornamental fish species are identified, and their potential larvicidal efficacy for biological control of Aedes mosquito larvae is assessed. The consumption rates of four ornamental fish species (Gold fish, Betta fish, Molly fish, and Guppy) for Aedes aegypti and Aedes albopictus larvae have been observed in the present study, and a comparison between the mean consumption rates of the four fish species for Ae. aegypti and Ae. albopictus has been recorded. The observation indicated practically no variance, and the intake rates for both types of larvae were almost same for the four species of fish. In contrast to guppy fish, the findings indicated that Goldfish, Black molly, and Betta fish had very high feeding rates. Therefore, in the near future, these fish can be thought of as efficient biological control agents for both Aedes aegypti and Aedes albopictus larvae.