Fin's Fish Guide
The Onespot demoiselle (Chrysiptera unimaculata) is a saltwater fish of the family Pomacentridae that grows up to 10 cm.
Description
The onespot demoiselle is a small damselfish from the Indo-West Pacific. The species grows to about 10 cm and has a yellow-brown body with fine blue lines and a conspicuous dark spot at the rear of the dorsal fin. As a territorial dweller of the turbulent reef flat and intertidal zone it lives among rubble and coral in very shallow water and feeds on algae, small zooplankton and benthic invertebrates. Males guard the eggs. The fish is harmless to humans. The IUCN assesses the species as Least Concern (LC).
Frequently asked questions
How do you recognise the Onespot demoiselle?
The Onespot demoiselle has a torpedo-shaped body, is mainly yellow-gold and shows a horizontal stripes pattern. Dark blotch at the rear of the dorsal fin; territorial nest-guarding damselfish
Where does the Onespot demoiselle live?
The Onespot demoiselle lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific
How big does the Onespot demoiselle get?
The Onespot demoiselle grows to a maximum of about 10 cm.
Is the Onespot demoiselle dangerous to humans?
No, the Onespot demoiselle 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 Onespot demoiselle edible?
The Onespot demoiselle is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Chrysiptera
More from the family Pomacentridae
Want the complete picture on the Onespot demoiselle?
Point your camera at the fish and Fin names the species in seconds. Free, and the Onespot demoiselle is one of 12,519 species in the app.