1Preheat your oven to 375°F (190°C).
Clean the fish thoroughly and season with salt and pepper.
Place the fish on a baking sheet and bake for 20-25 minutes until cooked through.
While the fish is baking, wash and chop the lettuce into bite-sized pieces.
Slice the onion thinly and halve the cherry tomatoes.
Once the fish is cooked, let it cool slightly, then flake the meat off the bones.
In a large bowl, combine the lettuce, cherry tomatoes, onion, and flaked fish.
Squeeze the juice of the lemon over the salad and toss gently to combine.
Season with additional pepper to taste and serve immediately.