Chelmon rostratus

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Eupercaria
Ordo: Chaetodontiformes

Familia: Chaetodontidae
Genus: Chelmon
Species: Chelmon rostratus
Name

Chelmon rostratus (Linnaeus, 1758)
Synonymy

Chaetodon rostratus Linnaeus, 1758

Vernacular names
čeština: Zobec obecný
English: Beaked coralfish, Copperband butterflyfish
日本語: ハシナガチョウチョウウオ
polski: pensetnik dwuoki

The copperband butterflyfish (Chelmon rostratus), also known as the beaked coral fish, is found in reefs in both the Pacific and Indian Oceans. This butterflyfish is one of the three species that make up the genus Chelmon and all have long beaks.
Description

These fish are easily identified by the yellow banding and long snout. The young fish are similar in appearance to adult fish. Butterflyfish grow up to 20 cm in length.[2] The fish appears taller than its length because of its compressed, deep-bodied form with a long dorsal and posterior fins as well as its vertical yellow stripes on a white background. The snout is long and slender, and the dark eye of the fish is less conspicuous than the dark eye-spot on the dorsal fin. The base of the tail features a dark band that runs perpendicular to the tail. Butterflyfish may be distinguished from the similar C. marginalis by their color pattern and number of dorsal fin rays.[2]
Habitat

Copperband butterflyfish are found at depths of 1−25 metres either alone or in pairs. These fish form monogamous pairs during breeding. They are usually found on coral reefs or rocky shorelines, and also in estuaries and silty inner reefs. This species is territorial and oviparous.[2]
In the aquarium

Copperband butterflyfish can grow to 8 inches (20 cm) but in a home aquarium are usually half that size.[citation needed] They do well at a normal reef temperature range of 75 to 84 °F (24 to 29 °C), with a tank size of at least 75 gallons and plenty of live rock to graze on. This species can be considered reef safe. It will eat many invertebrates, including parasitic forms such as tubeworms, Calliactis parasitica and common glass anemone (Aiptasia, parasitic anemone). Many aquarists introduce the Copperband Butterfly just to get rid of these pests without giving consideration to their long term needs for survival.[3] Given a choice, Aiptasia is the least favored food. The butterflyfish preys on all tube and substrate worms, clams, and mollusks. This is not a recommended fish for inexperienced aquarists, as it requires excellent tank conditions to thrive or even survive.
References

Myers, R.F.; Pratchett, M. (2010). "Chelmon rostratus". IUCN Red List of Threatened Species. 2010: e.T165659A6083324. doi:10.2305/IUCN.UK.2010-4.RLTS.T165659A6083324.en. Retrieved 20 November 2021.
Froese, Rainer; Pauly, Daniel (eds.) (2019). "Chelmon rostratus" in FishBase. December 2019 version.

Tristan Lougher (2006). What Fish?: A Buyer's Guide to Marine Fish. Interpet Publishing. ISBN 978-1-84286-118-9.

External links

"Copperband Butterflyfish – Chelmon rostratus". ReefCorner. Archived from the original on 2014-04-20. Retrieved 2020-04-07.
"Chelmon rostratus". Fishes of Australia. Archived from the original on 2020-04-07. Retrieved 2020-04-07.
Photos of Copperband butterflyfish on Sealife Collection