Pinecone Soldierfish can create sophisticated harmonics with their sonic muscles, ribs, and swim bladders, which can be used for underwater communication. They also have remarkable hearing sensitivity due to the close connection between their swim bladders and inner ears. Sounds travelling in the water reach the swim bladders, which produce vibrations that can be detected by inner ears.

These fish feed mostly on large zooplankton, using their keen eyesight to spot food and find mates. Their large eyes are not just for show—studies suggest they can remodel their retinas as they grow, helping them see in low light and forage effectively at night.

Pinecone Soldierfish are still relatively common in the ocean, but living in shallow coastal waters makes them vulnerable to the effects of human activities. Threats like targeted fishing and habitat loss could have impacts on their survival.