How to Make It
In a large sauté pan, heat two tablespoons of the oil over moderately high heat. Season both sides of the fish with salt and pepper and sauté for two minutes on each side. Transfer the fish to a plate and set aside.
Whisk together the shallot, garlic, lemon juice, lime juice, orange juice, honey and 4 tablespoons of the olive oil. Toss the arugula with half of the vinaigrette. Divide between 4 plates, top with the fish and drizzle with additional vinaigrette.