The Y-light sweeper (Pempheris ypsilychnus) is a saltwater fish of the family Pempheridae that grows up to 12 cm.
Description
The Y-light sweeper is a sweeper (Pempheridae) from shallow coral-reef and rocky water around Australia and the western Pacific. The species grows to about 15 cm and has a deep, laterally compressed, copper-coloured body with large eyes and a light organ on the belly. As a nocturnal, social fish it shelters in dense schools under overhangs and in caves by day and hunts zooplankton at night. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Y-light sweeper?
The Y-light sweeper has a flattened, disc-shaped body and is mainly brown.
Where does the Y-light sweeper live?
The Y-light sweeper lives in the sea (marine waters) and is mostly found around stony or rocky ground.
How big does the Y-light sweeper get?
The Y-light sweeper grows to a maximum of about 12 cm.
Is the Y-light sweeper dangerous to humans?
No, the Y-light sweeper is harmless to humans.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Pempheris
More from the family Pempheridae
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