Virophages are satellite viruses that inhibit or impair the reproduction of the auxiliary virus. As any satellite virus, virophages depend on the coinfection of their host by another virus. Similarly to other satellite viruses, the virophage jeopardizes the reproduction of the auxiliary virus. Examples are the Sputnik virophage and the Organic Lake virophage.
Despite an increasing number of references regarding the virophage concept in the scientific literature, there is also some controversy about its definition as an independent group rather than being another example of satellite viruses 
The virophages have not yet classified into a genus or family. Known virophages include
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