| Hemitaurichthys zoster | |
|---|---|
| | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Acanthuriformes |
| Family: | Chaetodontidae |
| Genus: | Hemitaurichthys |
| Species: | H. zoster |
| Binomial name | |
| Hemitaurichthys zoster (Bennett, 1831) | |
| Synonyms [2] | |
| |
Hemitaurichthys zoster, commonly known as the brown-and-white butterflyfish, black pyramid butterflyfish, zoster butterflyfish, or brushtooth butterflyfish, is a marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae native to the Indian Ocean.
The black pyramid butterflyfish is a small-sized fish that can reach a maximum length of 18 cm. [3] [4]
Its body is compressed laterally with a rounded body profile. The snout is somewhat stretched with a small terminal protractile mouth. The body is black, crossed in its center by a broad white trapezoid band with a yellow top, corresponding to the center of the dorsal fin. The caudal fin is white. [5]
Hemitaurichthys zoster is widespread throughout tropical and subtropical waters of the Indian Ocean from the eastern coast of Africa to Java in Indonesia and from India to Mauritius. [1] [3] It lives in large schools on outer reef slopes, from which it can sally into open water to feed on plankton. [6] The species is found at depths of 3–40 meters. [7] [8]
Hemitaurichthys zoster was first formally described as Chaetodon zoster in 1831 by the English zoologist Edward Turner Bennett (1797–1837) with the type locality given as Mauritius. [9] The specific name zoster means "belt" or "girdle" and is presumed to refer to the wide, white band in the middle of this fish's body. [10]
Hemitaurichthys zoster is a planktivore, and the species may be affected by climate-induced reductions in planktonic productivity. As there do not appear to be any specific current threats, it is listed as Least Concern (LC) by the IUCN. [1]