The word “beginner” and “butterflyfish” aren’t often paired together, as so many of the butterflyfishes seem to present some manner of husbandry challenge, often related to diet. Still, certain butterflies have a well-deserved reputation for hardiness and general ease of care. Among them isChaetodon kleinii, commonly called Klein’s butterflyfish but also known by a variety of other epithets, such as the sunburst butterflyfish, orange butterflyfish, brown butterflyfish, blacklip butterflyfish, Corallicola butterflyfish, and probably a few others I’m not aware of.
Physical traits
Reaching between 5 and 6 inches in total length,C. kleinii表现出典型的蝴蝶横向压缩身体，并且在身体后半部大部分是金黄色。从大约中部向前，基本的颜色变得更加奶油白色，垂直的暗淡棕色带出现在Operculum（Gill盖）后面（gill盖），垂直的黑色带穿过眼睛和黑色的嘴唇。
Feeding
According to Fishbase, in nature, this Indo-Pacific butterfly feeds “mainly on soft coral polyps (mainly onSarcophyton tracheliophorum和Litophyton viridis), algae, and zooplankton.” Specimens kept in aquariums should be offered, and will typically accept, a variety of readily available foods, such as frozen mysids, chopped fresh seafoods, and commercial formulations that satisfy their omnivorous palate. Also, be sure to provide multiple smaller喂食每天而不是一两顿较大的饭菜。
Housing
Though just a medium-sized fish,C. kleiniibenefits from a good combination of open swimming space and rockwork for concealment. So, a good-sized tank is recommended. I wouldn’t go any smaller than 75-gallons for this fish, and a larger tank would be even better.
Compatibility
C. kleiniiis a generally peaceful species that will coexist nicely with most other peaceful to moderately assertive species. It can also be kept in conspecific (same-species) groups provided all of the specimens are introduced to the tank at the same time. Keep in mind, however, that larger housing will be necessary if you plan to keep a group of these butterflies.
Considering its natural tendency to feed on certain coral polyps,C. kleiniicannot be considered reliably reef safe, so a fish-only orFOWLR(fish only with live rock) system is preferable.
