Grill the mahi-mahi (or you can bake it in the oven) with a little butter drizzled over the top. After grilling, don't slice it with a knife, break it into chunks with your fingers. It will break apart easier that way. In a small bowl, whisk together all the dressing ingredients and set aside. In a large bowl, GENTLY mix together the salad ingredients. Serve the salad into bowls, and then put the fish pieces on top. Pour the dressing over the top of each bowl. For vegetarians, this salad is very good without the mahi-mahi, and the garbanzos provide protein.