Scientific Name
Stegastes fasciolatus

Common Name
Pacific gregory

Biology
Dorsal spines (total): 13; Dorsal soft rays (total): 15-17; Anal spines: 2; Anal soft rays: 12 - 14. Variable body color, pale gray and various shades of brown from tan to nearly blackish (geographic varieties); each scale with blackish streak near margin appearing as narrow transverse bands. Usually bright yellow iris (except the Indonesian Pacific form); a bluish band across preorbital bone from lower front corner of eye to mouth; pale gray to whitish lips. Spinous part of dorsal fin with translucent submarginal band; median and pelvic fins gray to brown, except the Indian Ocean variety; pectoral fins nearly translucent to dusky brown, black spot at base of uppermost ray. Juveniles usually have blue-bordered dorsal and anal fins (Ref. 1602).

Classification

Classified By

Ogilby, 1889

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Damselfishes (Pomacentridae)

Distribution

Region

Indo-Pacific

Distribution

Indo-Pacific: East Africa to eastern Oceania, including the Hawaiian and Easter islands, north to the Ryukyu Islands, south to Australia and the Kermadec Islands.

Range

40°N - 35°S, 31°E - 109°W

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

30 m

Zone

reef-associated

Environment

Marine; reef-associated; non-migratory; depth range 1 - 30 m (Ref. 9710), usually 1 - 5 m (Ref. 9710)

Trophic Level

2.16 s.e. 0.07 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

False

Physical Size and Genetics

Maximum Length

15.0 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

Vulnerability

Low to moderate vulnerability (26 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