Scientific Name
Stegastes adustus

Common Name
Dusky damselfish

Biology
Dorsal spines (total): 12; Dorsal soft rays (total): 14-17; Anal spines: 2; Anal soft rays: 13 - 15. Juveniles are reddish orange above, with small bright blue spots on forehead and dark spots at upper pectoral fin base, dorsal fin, and caudal peduncle; colors disappear as fish grows larger (Ref. 26938). Adults dark gray to blackish with vertical black lines on body; a black spot, sometimes diffuse, at upper base of pectoral fins which are pale; other fins dark (Ref. 13442).

Classification

Classified By

Troschel, 1865

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Damselfishes (Pomacentridae)

Distribution

Region

Western Central Atlantic

Distribution

Western Central Atlantic: Florida, Gulf of Mexico, Caribbean Sea and along the coast of central America to Panama and Venezuela. Also known from the Bahamas and the Antilles.

Range

Unknown

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. 7247)

Trophic Level

2.53 s.e. 0.30 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

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

Aquarium: 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