8 ounces sashimi-grade snapper or sea bream fillet, skin removed, halved lengthwise, bones and bloodline removed, very thinly sliced
Fresh cilantro leaves (for serving)
Extra-virgin olive oil (for serving)
1 teaspoon toasted sesame seeds
Flaky sea salt (such as Maldon)
Directions
Pulse chiles, orange zest, orange juice, lemon zest, and lemon juice in a food processor until very finely chopped; season chile paste with kosher salt.
Arrange snapper on chilled plates. Top with chile paste and cilantro, drizzle with oil, and sprinkle with sesame seeds and sea salt.
DO AHEAD: Chile paste can be made 4 hours ahead. Cover and chill.