High angle view of man wearing waders working at a water tank at a fish farm raising trout, holding fish net

standing holding working caucasian ethnicity mature adult 50s adult 50 55 years male men mature men middle aged man fisher businesspeople 1 person geometric united kingdom england oxfordshire horizontal colour image photography food storage tank water tank fishing equipment fishing net farm outdoors day business small business environment environment issues environmental conservation sustainability fishing industry organic farm man working life business owner eco friendly fishing gear fishing waders waders agribusiness fish farm fish farming organic farming pisciculture food security sustainable food production food production aquaculture trout farm