Chaetodon kleinii – Sunburst Butterflyfish
Chaetodon kleinii was first described by Marcus Elieser Bloch in 1790. This fish belongs to the family Chaetodontidae, commonly known as the Butterflyfishes. The family Chaetodontidae includes approximately 12 genera and over 136 species. The genus name Chaetodon is derived from the Greek words ‘chaite’ (meaning hair) and ‘odous’ (meaning teeth), which refers to the bristle-like teeth of these fish. The species name kleinii honors Jacob Theodor Klein (1685-1759), a German jurist, historian, botanist, zoologist, and mathematician, who illustrated this species in volume 4 of his five-volume history of fishes, an illustration that caught Bloch’s attention.They are referred to as Kleinii’s Butterflyfish, Sunburst Butterflyfish and Blacklipped Butterflyfish.
Synonyms: Anisochaetodon kleinii, Exornator exornator kleinii, Chaetodon melastomus, Chaetodon melammystax, Chaetodon flavescens, Chaetodon virescens, Chaetodon bellulus, Chaetodon corallicola, Chaetodon cingulatus.
Description
Chaetodon kleinii has a laterally compressed body typical of butterflyfish. The body color ranges from yellowish brown to brownish orange, with a white head and a diffuse whitish band in the middle of the body. There is a black vertical band that runs through the eye and the lips are black. The fins are usually yellow in color. The maximum length of this fish species is about 15 centimeters.
Differences Between Males and Females: In this species, there are no significant physical differences between males and females. Additionally, behavioral differences are not well documented. Juveniles may exhibit slightly different coloration and patterning compared to adults, but these variations are subtle.
Behavior and Temperament: Chaetodon kleinii is typically a peaceful species that can thrive alone, in pairs, or in small groups. They are not particularly shy and often swim in the mid-water region of their habitat. As omnivores, their diet primarily consists of soft coral polyps, algae, and zooplankton.
Life expectancy: In the wild, these fish can live for several years, while in a well-maintained aquarium, they often live longer, sometimes up to 10 years or more.
Biotope
Chaetodon kleinii is found in the Indo-Pacific region, from the Red Sea and East Africa to the Hawaiian Islands and Samoa, north to southern Japan, and south to New South Wales, Australia, and New Caledonia. They are also found in the Galapagos Islands in the eastern Pacific.
They usually live in deeper lagoons and channels, and on seaward reefs. Their natural habitat consists of coral reefs with many hiding places and open swimming areas. The bottom of their habitat often consists of sand and coral rubble. They have some natural predators such as larger predatory fish, but they are also hunters themselves, feeding on small invertebrates.
Diet
Chaetodon kleinii feeds primarily on soft coral polyps, algae, and zooplankton in the wild. They also eat small invertebrates such as shrimp and krill.
In the aquarium, they can be fed various foods such as frozen mysis, chopped fresh seafood, and commercial foods that supplement their omnivorous diet. Feeding them small amounts several times a day rather than one or two large meals is important.
It is not advisable to feed them coral or polyps, as this can trigger their natural instinct to attack corals in the tank. They are not entirely reef-safe, as they may sometimes nibble on both hard and soft corals. Additionally, they may also eat shellfish, such as Tridacna.
The Aquarium
To properly house Chaetodon kleinii, the aquarium should have a minimum capacity of 300 liters to ensure ample swimming space and hiding spots. If you plan to have multiple pairs, it is advisable to use a larger aquarium, ideally 500 liters or more. The setup should include plenty of rocks and coral structures to create hiding places. Additionally, a sandy substrate is recommended for the bottom of the aquarium.
The optimal water conditions for this species include a temperature between 22°C and 28°C, a pH level ranging from 8.1 to 8.4, and a salinity of 1.020 to 1.025. It is important to ensure that the aquarium is well-established before introducing this species, as it requires adequate levels of algae and microorganisms to thrive.
Suitable tankmates include peaceful to moderately assertive species like clownfish, surgeonfish, and various butterflyfish. It is important to avoid aggressive species and those that compete for the same food.
Breeding Chaetodon kleinii
There is no specific information available on breeding Chaetodon kleinii in a standard aquarium.
Particularities
A peculiarity of Chaetodon kleinii is that they are often used against a plague of glass anemones (Aiptasia), although not every fish actually eats them. They are also known for their behavior of “mobbing,” where they raid the nests of other fish in a group to consume their eggs.
Conclusion
Chaetodon kleinii is a relatively easy butterflyfish to care for, particularly when compared to other species in the same family. They are peaceful and can coexist well with other peaceful to moderately assertive species. Although they are not completely reef-safe, they can be a valuable addition to a well-maintained aquarium. It is crucial to provide them with a varied diet and to feed them several times a day to accommodate their natural behaviors. Overall, they are an excellent choice for both beginner and advanced aquarium enthusiasts.
Video
Author
John de Lange
Copyright images
Russell Gilbert
Snyder
Francois Libert (Zsispeo) – CC BY-NC-SA 2.0
Richard Ling – www.rling.com
