Mesocyclops is a genus of copepod crustaceans in the family Cyclopidae.

Individuals of Mesocyclops can be easily harvested, bred and released into freshwater containers where the Aedes aegypti mosquito larvae (the vector of Dengue fever) live.

[2] A big advantage of the Mesocyclops is that it is possible to teach schoolchildren how to recognize and collect them so that communities are able to perform sustainable mosquito control without much professional or governmental assistance.

A field trial in Vietnam has shown that large-scale elimination of Aedes aegypti larvae is possible.

Furthermore, many cultures have traditions and customs that forbid the introduction of animals into freshwater storage vessels as dangerous taboos.