编辑下面这段文字，使其更具可读性和逻辑性。
当一家餐厅提供鲜鱼时，最重要的是新鲜程度。顾客希望他们点的食物尽可能的新鲜。如果顾客的鱼菜太老了，他们会很失望。在中国，新鲜的鱼被称为“活鱼”，这意味着鱼必须在客人面前杀死，确保新鲜。因此，在这家餐厅，每个顾客都有机会看到鱼的新鲜程度，并确保它是新鲜的。
When a restaurant offers fish, the most important thing is its freshness because customers want their food to be as fresh as possible. If customers receive fish that is too old, they will be disappointed. In China, fresh fish is known as "live fish," which means the fish must be killed in front of the customers to ensure its freshness. Therefore, in this restaurant, every customer has the opportunity to see the freshness of the fish and ensure that it is indeed fresh.