Fin's Fish Guide
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. Oceania: Australia
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. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Want the complete picture on the Y-light sweeper?
Point your camera at the fish and Fin names the species in seconds. Free, and the Y-light sweeper is one of 12,519 species in the app.
All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Pempheris
More from the family Pempheridae
Want the complete picture on the Y-light sweeper?
Point your camera at the fish and Fin names the species in seconds. Free, and the Y-light sweeper is one of 12,519 species in the app.