Masked butterflyfish
Chaetodon semilarvatus
- Scientific name
- Chaetodon semilarvatus
- Group
- Reef fish
- Rarity
- Common
- Where to see it
- Indo-Pacific & Red Sea
- Conservation status (IUCN)
- Least concern
Did you know?
The masked butterflyfish, endemic to the Red Sea, almost always swims in pairs, and the black mask around its eyes is thought to confuse predators trying to spot its gaze.
What defines this group — Reef fish
The bony fish that live against coral and rock: the living backdrop of almost every dive.
- A bony skeleton, scales, and a rigid gill cover closing over the gills.
- A swim bladder acts as a float: they hold their depth without swimming.
- Many change colour, pattern — sometimes even sex — over the course of their life.
Other species in this group
- Ocellaris clownfish
- Blue tang
- Red lionfish
- Spot-fin porcupinefish
- Mediterranean moray
- Clark's anemonefish