1.Place fish in a food processor and pulse until finely chopped. Add coconut, spice paste, kaffir lime leaves, tamarind paste, chopped chilli and palm sugar and process until a paste forms. Mould 2 tablespoons of mixture around each of 12 skewers. Chill for 15 minutes.
2.In a bowl, toss pineapple with cucumber and sliced chilli and set aside.
3.Heat a chargrill on high. Cook fish satays for 5 minutes, turning regularly, until golden and cooked through. Arrange on a platter with pineapple and cucumber salad and serve with tomato sambal for dipping.