Gravolox, gravalox, gravlox = filleted salmon marinaded in salt,sugar, a half dozen spices, orange juice, lemon juice and brandy. Sounds good. Nothing to be finicky about.

seviche
n.
a Latin American dish consisting of small pieces of raw fish or shellfish marinated in lime juice with chilies, chopped tomatoes, and herbs: it is served chilled, often as an appetizer