Splitfin flashlightfish or two-fin flashlightfish, Anomalops katoptron. They have two bean shaped torch-like organs under its eyes containing bioluminescent bacteria, which the fish can turn on and off by blinking. The light organs are embedded in suborbital cavities and are connected at the anterior edge via a cartilaginous rod like attachment. The suborbital light organs are densely settled with luminous symbiotic bacteria that grow in tubular structures and produce a constant bluish light. The flashlight fish blinks up to 90 blinks per minute, but when the flashlight fish detects its living planktonic prey, their light organs open for a longer period of time and blink five times less frequently. Philippines - Composite image

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Keywords

Wild animal / Fish (animal) / Osteichthyes / Actinopterygii / Splitfin flashlightfish (Anomalops katoptron)

World sea and ocean / Pacific Ocean

Eukaryota / Opisthokonta / Metazoa / Bilateria / Coelomata / Deuterostomia / Chordata / Vertebrata / Pisces / Osteichthya / Actinopterygii / Teleostei / Beryciformes / Anomalopidae / Anomalops

Area / Marine area / Reef

Image processing / Digital assembly

Behavior / Bioluminescence

Species / Species particularity / Fishes particularity / Saltwater fish / Coral reef fish

Area / Naturalness / Natural area

Area / Marine area / Sea bottom

Asia / Far East / South East Asia / Insulinde / Philippines

Shot / Underwater shot

Shot / Overview

Shot / Profile shot

Motion / Locomotion / Swim

Enumeration / Alone

Individual / Stage of development / Adult

Area / Marine area / Sea / Tropical sea

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