Before cooking your fish, make sure the grill is hot. Small whole fish, such as sardines, red mullet and mackerel, will cook quickly, taking 4-5 minutes on each side. Thicker fish, such as sea bream, sea bass or salmon steaks, which are cooked on the skin side, require a longer cooking time in proportion to the size of the fish, and should not be placed too close to the coals to avoid burning. For those who like their tuna or salmon steak raw through and through, one-sided cooking is ideal. In all cases, the fish flesh should remain pearly, i.e. just cooked.