“…High fish activity at dusk and dawn and low activity at night corresponded well to active telemetric (Jacobsen et al, 2002(Jacobsen et al, , 2004Zamora and Moreno-Amich, 2002;Hautala, 2008) and hydroacoustic (Lilja et al, 2003) studies, as well as to passive trapping (Baade and Fredrich, 1998) and gillnetting (Olin and Malinen, 2003;Olin et al, 2004;Vašek et al, 2009) studies on common European fish.…”