The Blacktail sergeant (Abudefduf lorenzi) is a saltwater fish of the family Pomacentridae that grows up to 18 cm.
Description
The blacktail sergeant is a damselfish from the Western Pacific. The species grows to about 18 cm and has a deep, laterally compressed, silvery-white body with five dark cross-bars and a conspicuously dark tail. It lives in shallow water on coastal and reef margins, where it feeds on algae, small zooplankton and benthic invertebrates. Males guard the eggs laid on stone. The fish is harmless to humans. The IUCN assesses the species as Least Concern (LC).
Frequently asked questions
How do you recognise the Blacktail sergeant?
The Blacktail sergeant has a flattened, disc-shaped body, is mainly silver-grey and shows a vertical stripes pattern. Silvery-white body with five dark bands and a dark tail; nest-guarding damselfish
Where does the Blacktail sergeant live?
The Blacktail sergeant lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Pacific
How big does the Blacktail sergeant get?
The Blacktail sergeant grows to a maximum of about 18 cm.
Is the Blacktail sergeant dangerous to humans?
No, the Blacktail sergeant 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.
Is the Blacktail sergeant edible?
The Blacktail sergeant is not usually eaten.

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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Abudefduf
More from the family Pomacentridae

Want the complete picture on the Blacktail sergeant?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blacktail sergeant is one of 12,519 species in the app.