I went about the job in a direct way. I took the hatchet in both my hands and vigorously beat the fish on the head with the hammerhead (I still didn’t have the stomach to use the sharp edge). The dorado did the most extraordinary thing as it died: it began to flash all kinds of colours in rapid succession. Blue, green, red, gold, and violet flickered and shimmered neon-like on its surface as it struggled. I felt I was beating a rainbow to death.