How do trumpetfishes use their long tubelike beaks?

Trumpetfishes possess an elongated body with a snout that is prolonged into a rigid, tubelike beak ending in small jaws. These marine fishes are predators that use this specialized structure to feed on small fishes and crustaceans.12

To effectively hunt their prey, trumpetfishes often employ ambush tactics. They are known to conceal themselves by floating in a vertical, head-down position among corals, or by swimming alongside larger fishes to approach their prey undetected.1