The sun has risen, the fish are singing….

Growing up interacting with fish called “grunts,” this doesn’t come as a huge surprise, but it’s still kind of cool. New Scientist captures the chorus of fish on the wing, with a recording of reef fish singing at dawn and dusk:

Robert McCauley and colleagues at Curtin University in Perth, Australia, recorded vocal fish in the coastal waters off Port Headland in Western Australia over an 18-month period, and identified seven distinct fish choruses, happening at dawn and at dusk.

The low “foghorn” call is made by the Black Jewfish (Protonibea diacanthus) while the grunting call that researcher Miles Parsons compares to the “buzzer in the Operation board game” comes from a species of Terapontid. The third chorus is a quieter batfish that makes a “ba-ba-ba” call.

“I’ve been listening to fish squawks, burble and pops for nearly 30 years now, and they still amaze me with their variety,” says McCauley, who led the research.

Sound plays an important role in various fish behaviours such as reproduction, feeding and territorial disputes. Nocturnal predatory fish use calls to stay together to hunt, while fish that are active during the day use sound to defend their territory. “You get the dusk and dawn choruses like you would with the birds in the forest,” says Steve Simpson, a marine biologist at the University of Exeter, UK.

Audio at the link.

[via vruba; and I’m pretty sure the batfish is a rising “wuh-buh-buh-buh-buh-buh” at 27 seconds in.]

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