Many people think of mosquitoes as dangerous insects which are responsible for spreading malaria, a disease that kills millions each year in sub-Saharan countries. However, out of the many species of mosquitoes out there, it is only a handful that are responsible for spreading disease. The rest are actually very important in nature. There are definitely many good things that mosquitoes do.
One of these is being food for the fish. Mosquito larvae tend to settle in wet areas such as ponds. Tadpoles and fish eat the larvae, allowing the latter to mature and thus provide a rich source of protein and omega oils for humans.
The other notable importance of mosquitoes in the ecosystem is pollination. The vast majority of mosquitoes do not feed on blood, but nectar instead. When doing this, they easily transfer pollen from one flower to another, thus facilitating cross pollination. This is critical for the maturation of plants and spreading of flora. The mixing of genes between plants is also important since it ends up creating plant species that have better survival qualities than the previous types.
Adult mosquitoes also serve as food for many other animals including bats and frogs. This keeps the ecosystem in a perfect balance, which is necessary for keeping most biological systems in order.
Though most known for spreading malaria, it is clear that mosquitoes do a lot more than that, and actually have some good attributes. These are the major good things that mosquitoes are responsible for, despite being the number one killer in third world countries by spreading malaria.