Poached Halibut Salad with Meyer Lemon Vinaigrette

Name: Poached Halibut Salad with Meyer Lemon Vinaigrette
Cuisine: European, Mediterranean
Ingredients: 2 small halibut fillets (about 4-5 ounces each); 2 handfuls baby arugula or other baby lettuce; 1 handful mache lettuce; 4 radishes (thinly sliced); 8 cherry tomatoes (halved); 1 shallot (peeled and very thinly sliced); 2 Tbsp chopped fresh dill; pansies or other edible flower; juice of 1 Meyer lemon (about 1/4 cup); equal amount olive oil; 1/4 tsp mustard; salt and pepper to taste