01 - In a large bowl, combine the drained tuna, breadcrumbs, bell pepper, green onions, cilantro, eggs, mayonnaise, sriracha, Dijon mustard, garlic powder, smoked paprika, salt, and black pepper. Mix gently until fully incorporated.
02 - Divide the mixture into 8 equal portions and shape into compact patties.
03 - Heat vegetable oil in a large nonstick skillet over medium heat. Fry the tuna cakes in batches for 3–4 minutes per side, or until golden brown and crisp. Transfer to a paper towel-lined plate to drain.
04 - Meanwhile, stir together mayonnaise, sriracha, lime juice, and a pinch of salt in a small bowl to make the sriracha mayo.
05 - Serve the tuna cakes hot, drizzled or dipped with sriracha mayo.