Thaw prawns and halibut. Peel spot prawns. Add to a bowl.
In a skillet over medium high heat, add 1 tbsp of olive oil and the sliced bell pepper and onions. Cook over low heat until soft. Season with salt and pepper.
In a small bowl, mix the taco spices until well combined.
Toss the spot prawns in olive oil and mix in ¾ of the taco seasoning. Save the rest for the halibut.
Add a drizzle of olive oil on each fillet of halibut and rub the taco seasoning until evenly covered.
In a skillet over medium-high heat or on the grill, cook the spot prawns for 2 minutes per side and the halibut for 4 minutes per side or until it flakes apart.
While the fish cooks, prepare the guacamole by adding avocado, the juice of 1 lime, 1 tsp diced cilantro, salt, and pepper to a bowl. Mash until well combined.
When the fish and prawns are done, season with the juice of 1 lime.
To assemble the tacos, add fish or prawns to a corn tortilla. Top with sautéed peppers and onions, guacamole, salsa, and pico de gallo. Drizzle sriracha ranch over.
Serve and enjoy!