Johnston Island damsel (Plectroglyphidodon johnstonianus) fish species and information / pictures of Johnston Island damsel - Plectroglyphidodon johnstonianus

Johnston Island damsel (Plectroglyphidodon johnstonianus) fish species information

Scientific Name
Plectroglyphidodon johnstonianus

Common Name
Johnston Island damsel

Biology
Dorsal spines (total): 12; Dorsal soft rays (total): 17-19; Anal spines: 2; Anal soft rays: 16 - 18. Identified by the yellowish color and broad black rounded bar, but black sometimes reduced to a trace (Ref. 48636).

Classification

Classified By

Fowler & Ball, 1924

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Damselfishes (Pomacentridae)

Distribution

Region

Indo-Pacific

Distribution

Indo-Pacific: East Africa to the Hawaiian, Marquesan, and Pitcairn islands, north to the Ryukyu and Bonin islands, south to Lord Howe Island and Rapa. Unknown from the Red Sea, Persian Gulf and Gulf of Oman (Ref. 11441).

Range

30°N - 30°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

18 m

Zone

reef-associated

Environment

Marine; reef-associated; non-migratory; depth range 1 - 18 m (Ref. 1602)

Trophic Level

3.35 s.e. 0.60 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

14.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5010 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest; aquarium: commercial

Vulnerability

Low to moderate vulnerability (25 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