Chaetodon larvatus
Red Sea butterflyfish with recent Mediterranean records.
The hooded butterflyfish, also called the orangeface butterflyfish and many other common names, is a marine ray-finned fish in the family Chaetodontidae. It lives in the Red Sea and Gulf of Aden, and has recently been recorded twice in the eastern Mediterranean, off Israel and Syria.
This species reaches a total length of up to 12 cm (4.7 in). Its body is powder blue with narrow, white chevron-shaped bars. The head and front of the body are a vivid red-orange, while the rear of the dorsal fin and the caudal fin are black.
Hooded butterflyfish inhabit seaward and lagoon coral reefs, usually swimming in pairs and defending territories. They feed almost exclusively on the polyps of tubular Acropora corals. However, because the species has been seen in the Mediterranean, where coral growth is limited, it may be able to adapt to a different diet.
Phylogenetically, the hooded butterflyfish is a far western sister species of the triangle butterflyfish (C. triangulum) from the Indian Ocean and C. baronessa from the Indo-Pacific. Together these three form the subgenus Gonochaetodon. If Chaetodon is split up as some researchers suggest, this group might be placed into Megaprotodon with other high-backed, square-bodied species, though its exact relationships remain unclear.
Quick Facts
- Genus
- Chaetodon
- Parent
- Chaetodon (Gonochaetodon)
- Species
- larvatus
Facts from the source article.
Lore & Background
The hooded butterflyfish grows to a maximum size of 12 cm total length. Its body is powder blue with a pattern of narrow, white chevron-shaped bars, while the head and front of the body are colored intense red-orange. The back of the dorsal fin and the caudal fin are black. It is found in seaward and lagoon coral reefs, typically swimming in pairs and being territorial. Normally this species feeds exclusively on the polyps of tubular Acropora corals, though its observation in the Mediterranean, where coral growth is limited, suggests it may be able to adapt to a different diet. Phylogenetically, the hooded butterflyfish is a far western sister species of the triangle butterflyfish (C. triangulum), which lives in the Indian Ocean, and C. baronessa, which inhabits the Indo-Pacific. Together these species form the subgenus Gonochaetodon. If Chaetodon is split up as some researchers propose, this group might go into Megaprotodon with other high-backed and square-bodied species, but its exact relationships are still not well known.
Reader's Guide
The hooded butterflyfish is significant as a species of the family Chaetodontidae found in the Red Sea and Gulf of Aden, with recent records in the eastern Mediterranean Sea off Israel and Syria. Its presence in the Mediterranean, where coral growth is limited, raises questions about its dietary adaptability, as it normally feeds exclusively on the polyps of tubular Acropora corals. This species is part of the subgenus Gonochaetodon, alongside the triangle butterflyfish and C. baronessa, and its exact phylogenetic relationships remain uncertain, with some researchers proposing it might be placed in the genus Megaprotodon. The species is typically observed swimming in pairs and is territorial, inhabiting seaward and lagoon coral reefs. Its distinctive coloration—powder blue with white chevron bars and an intense red-orange head—makes it visually notable. The legacy of this species includes its role in understanding butterflyfish evolution and biogeography, particularly as a far western sister species to Indian Ocean and Indo-Pacific relatives, and its potential to adapt to new environments as evidenced by its Mediterranean occurrences.
Did You Know?
- Its body is powder blue with narrow, white chevron-shaped bars, and its head is intense red-orange.
- It has been recorded twice recently in the eastern Mediterranean Sea off Israel and Syria.
Frequently Asked Questions
What is Chaetodon larvatus?
It is a small marine butterflyfish in the family Chaetodontidae, most commonly called the hooded or orangeface butterflyfish. It is native to the Red Sea and Gulf of Aden, though a couple of rare sightings have placed it in the eastern Mediterranean near Israel and Syria.
What does Chaetodon larvatus look like?
The body is a soft powder blue crossed by thin white chevron stripes, while the face and front of the body glow in a vivid red-orange. The rear section of the dorsal fin and the entire tail fin are solid black.
Where does Chaetodon larvatus live?
This species occupies seaward-facing and lagoon coral reefs throughout the Red Sea and Gulf of Aden. Two recent records have extended its known range into the eastern Mediterranean off the coasts of Israel and Syria.
What does Chaetodon larvatus eat?
Its diet is extremely narrow, consisting exclusively of polyps from tubular Acropora corals. There is speculation that the fish might adjust its feeding in the Mediterranean, where the available coral community differs from the Red Sea.
How big does Chaetodon larvatus get?
Adults reach a maximum total length of about 12 centimeters (roughly 4.7 inches), making it a modestly sized reef fish.
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