Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Pennant Bannerfish

Heniochus chrysostomus


A good reason to be a butterflyfish is you get a drum kit inside your body. The ribs have specialized nodules on them (sort of like the tip of a drumstick) and they are next to a specialized muscle that vibrates so that they hammer against the fish’s swim bladder (the air sac that stops them from floating up or sinking down). This fish makes different trains of sound, each one sharing a particular feeling or meaning and not just butterflyfish have these drums, many fish have different drums and different rhythms and if the bubbles were not so noisy and our ears worked better full of water the reef would be a percussive wonderland, a heaven for drummers. Ocean Freedom, Guardian Joe Buck

Species ID Suggestions

Sign in to suggest organism ID

No Comments

Spotted by

Cairns, Queensland, Australia

Spotted on Nov 20, 2014
Submitted on Nov 20, 2014

Related Spottings

Schooling Bannerfish Longfin bannerfish Horned Bannerfish Red Sea Bannerfish

Nearby Spottings

Egg Cowrie Tawny Nurse Shark Imperial Lance Urchin Seram Blenny
Noah Guardians
Noah Sponsors