The reasons for the poor status of this species in Europe are unclear.
A number of areas have been selected as candidate Special Areas of Conservation (SACs) (7) in order to reflect a variety of ecological situations and the geographical range of the bullhead (7). This should help to secure a strong conservation status for this fish, but it is thought that further measures will be required to maintain the UK population (7). The life in UK Rivers Project is helping to conserve this species (8).