Butterflyfishes

Masked bannerfish (Heniochus monoceros)

The Masked bannerfish (Heniochus monoceros) belongs to the family Chaetodontidae (butterflyfishes) and is found in the Red Sea, with a wider Indo-Pacific range. It is a carnivore and usually seen in pairs or small groups. It reaches about 15 cm and is found at 1–50 m depth. IUCN conservation status: Least Concern. It is not dangerous to divers.

Masked bannerfish (Heniochus monoceros), a Red Sea fish of the butterflyfishes family
Photo: iNaturalist / Wikimedia Commons

Quick facts

Scientific nameHeniochus monoceros
FamilyButterflyfishes (Chaetodontidae)
Common name (IT)Pesce bandiera mascherato
Common name (EN)Masked bannerfish
Maximum size15 cm
Depth1–50 m
DistributionRed Sea and Indo-Pacific
IUCN statusLC — Least Concern

Description

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

Where it lives

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

  • Red Sea
  • Indo-Pacific

Frequently asked questions

What family does the Masked bannerfish belong to?
The Masked bannerfish (Heniochus monoceros) belongs to the family Chaetodontidae (butterflyfishes).
Is the Masked bannerfish dangerous?
It is not dangerous to divers. As with any reef animal, do not touch or handle it.
Is the Masked bannerfish endemic to the Red Sea?
No — it occurs in the Red Sea but its range extends across the Indo-Pacific.
How big does the Masked bannerfish get?
It reaches a maximum length of about 15 cm.

Explore the Masked bannerfish in 3D in the interactive atlas →