The effect of artificial light at night on wild fish community: manipulative field experiment and species composition analysis using environmental DNA

•Artificial light at night (ALAN) causes light pollution, affecting organisms.•This study investigated the effect of ALAN on wild-fish ecology.•The ALAN treatment level used in this study did not alter the species composition.•Location had a greater effect on fish habitat selection than ALAN in this study.•Carnivorous species may be affected more by ALAN than other fish.