Halibut with stalks

2 lbs halibut or 2 lbs any white fish fillets 1/4 cup good quality dark green olive oil 1/4 cup fresh parsley , chopped 1 yellow onion , thinly sliced 2[...]

1 1/2 cups cooked halibut 1/8 cup banana pepper , finely chopped 2 tablespoons sweet cherry peppers, finely chopped 3 stalks celery , finely diced 3 scallions[...]