Start by heating some vegetable oil in a large skillet over medium-high heat.
Once the oil is hot, add the onion and garlic to the skillet and cook for 2-3 minutes until softened.
Add the tomato, chili peppers, wine, pisco, cream, salt, pepper, and cumin to the skillet. Stir everything together and reduce the heat to low. Simmer for 8-10 minutes until slightly thickened.
Add the fish, mussels, shrimp, squid, clams, and octopus to the sauce in the skillet. Gently stir everything together and cover it with a lid. Simmer for 10-12 minutes or until the fish is cooked through.
Add the potatoes to the skillet and stir everything together. Allow to cook for another 2-3 minutes.
Remove from heat and squeeze the limes over the dish. Serve immediately with some white rice and enjoy!