1Make the broth:In a large saucepan, heat the olive oil. Add the shallot, bay leaf, fennel seeds and saffron and cook until fragrant, about 20 seconds. Add the stock and bring to a boil. Cover, remove from the heat and let steep for 10 minutes.
Return the broth to a boil and add the clams, chorizo and garlic. Season with salt and pepper, cover and cook over high heat, shaking the pan occasionally, until the clams just open, about 5 minutes. Discard the bay leaf and keep the broth warm.
Meanwhile,cook the fish Season the hake fillets with salt, pepper and smoked paprika and dust with flour. In a large skillet, heat the olive oil until shimmering. Add the fish and cook over moderately high heat, turning once, until golden and just cooked through, about 6 minutes.
Transfer the fish to shallow bowls. Spoon the clams, chorizo and broth around the fish and serve with Paella Rice.