Scientific Name
Heniochus chrysostomus

Common Name
Threeband pennantfish

Biology
Dorsal spines (total): 12 - 13; Dorsal soft rays (total): 21-22; Anal spines: 0; Anal soft rays: 17 - 18. Body color is white with three oblique broad dark brown bands, the first running from the top of the head through the eye to the abdomen, the second from the fourth dorsal spine to the posterior of the anal fin, and the third on the back and the adjacent dorsal fin (Ref. 4855). Juveniles have a longer, narrower "pennant" than adults as well as a double ocellus in the black portion of the anal fin (Ref. 37816).

Classification

Classified By

Cuvier, 1831

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Butterflyfishes (Chaetodontidae)

Distribution

Region

Indo-Pacific

Distribution

Indo-Pacific: Western India to Pitcairn Islands, north to southern Japan, south to Rowley Shoals, southern Queensland, and New Caledonia; throughout Micronesia.

Range

32°N - 28°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2 m

Depth To - meters

40 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 2 - 40 m (Ref. 9710)

Trophic Level

3.28 s.e. 0.55 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

18.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5039 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 (14 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)