arctic char salvelinus alpinus

active alpine alpinus alps apex aquatic arctic area azure background beautiful behavior biodiversity biology blue climate cold cold-water conservation cover diet distribution ecology elevation endangered environment environmental europe fish fisheries fishing france freshwater gillnets grooming habitat high holarctic lakes landscape management mountain mountains native natural nature outdoor peak population protection region reproduction rocky salmonidae salvelinus salvenius scenery scenic season sky species sport spring subarctic sunny surface sustainable tourism trail travel vacation vulnerable water waters weather wildlife wonderful