Here's what we know about their communication:
* Visual cues: They use body language, including fin movements, color changes, and facial expressions, to communicate.
* Chemical signals: They release pheromones into the water to attract mates or signal danger.
* Lateral line system: They have a sensory system that detects vibrations and water currents, allowing them to communicate through subtle movements.
So, there is no specific term for the "sound" of a dolphin fish because they don't make sounds in the way we typically associate with communication.