Fillingsjöns FVOF was formed in 1989 and manages the fishing in Fillingsjön and the adjacent ponds and waterways. The association's purpose is to coordinate fishing and fish conservation in the area by removing obstacles to migration and laying out gravel beds and rice fields.

A fishing competition is arranged every year.

Fillingsjön's fish conservation area is also available on Bengtsfors Kommunfiskekort.