Scientific Name
Chrysiptera unimaculata

Common Name
Onespot demoiselle

Biology
Dorsal spines (total): 13; Dorsal soft rays (total): 13-14; Anal spines: 2; Anal soft rays: 12 - 14. Those between Pacific and Indian Ocean are most different. Adults usually plain dark with a black spot at the end of the dorsal fin base and a small orange spot on gill-plate (Ref. 48636). This species may resemble C. biocellata but never has a pale bar on its side. Usually it has more (19 against 18) pectoral rays and more pored lateral line scales (18 against 17 in upper series).

Classification

Classified By

Cuvier, 1830

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Damselfishes (Pomacentridae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: Red Sea and East Africa to Fiji, north to Ryukyu Islands, south to the southern Great Barrier Reef. Recently reported from Tonga (Ref. 53797).

Range

32°N - 30°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

3 m

Zone

reef-associated

Environment

Marine; reef-associated; non-migratory; depth range 0 - 3 m (Ref. 4391)

Trophic Level

2.08 s.e. 0.13 Based on diet studies.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

10.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial; aquarium: commercial

Vulnerability

Low vulnerability (21 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated