For the past three night, I have been waken at 3-4 AM by the sound of fish running into the hull. I went on deck and saw schools of small fish being chased by dolphins. The dolphins had learned to chase the fish into the boat to render them stunned. Last night one of the fish jumped into the dinghy so I could identify it.
The species is Longfin Halfbeak (Hemiramphus saltator), which is characterized by its red-colored beak.