300g Tuna steaks, 3cm thick
1 x 300g piece Salmon fillet, skin off, bones removed, 3cm thick
1 x 300g piece Sellowtail Kingfish fillet, skin off, bones removed, 3cm thick
1 telegraph cucumber, seeded and grated
3 red shallots, halved and finely sliced (see notes)
¼ cup coriander leaves, finely sliced
Vegetable oil, for brushing
Satay peanut sauce, for serving
Lime wedges, for serving