For lunch, preheat the oven to 180 degrees and let it heat up. Place the fish fillets on a baking tray lined with parchment paper, drizzle a amount of olive oil and salt over them, and bake in the oven for approximately
15-20 minutes. Wash and dry the arugula salad, mix it with olive oil and lemon dressing, and serve it with the baked fish fillet.