Preheat the oven to 400° F.
Greased 4 small baking dishes with butter .Set a side.
Cook the potatoes in salted water for about 7 minutes. Drain and set aside.
In a medium skillet melt the butter over medium high heat, sauté the onions and garlic for about 5 minutes or until the onions are translucent.
Add the heavy cream, fish bouillon, salt and pepper. Bring to a boil, and then reduce the heat to low and let it simmer for 5 minutes. Let it cool and add the beaten eggs.
Season the fish fillets with cumin, paprika, salt and pepper.To assemble: Place a layer of potatoes on the bottom of each baking dish. Add about 2 tablespoons of the heavy cream mixture on top. Place a fish fillet on top of the potatoes and top with another layer of potatoes and 2 tablespoons of heavy cream mixture.
Sprinkle bread crumbs and parmesan cheese on top and bake for about 25 minutes or until cook. Garnish with fresh chives and serve.