Combine rice, tuna, zucchini, carrot, cucumber, tomato, snow peas, onion and rocket in a large bowl to make salad.
Step 2 Whisk olive oil, vinegar and lemon juice in a small bowl to make dressing.
Step 3 Divide salad among serving bowls or plates. Scatter salad with crumbled feta, drizzle with dressing and serve.