The Sunburst Butterfly (Chaetodon kleinii) gives marine keepers a hardy, peaceful fish that adapts reliably to home aquariums while adding golden-yellow color to a display. Its strong record in public and private systems fives confidence to keepers who want a dependable fish supported by well-established husbandry knowledge. 

Appearance

The Sunburst Butterfly has a golden-yellow body with a pale front section, a dark vertical bar through the eye, and dark lips. Its oval, laterally compressed shape allows quick movement around rockwork, and small variations in pattern occur across regions.

Care & Requirements

A minimum of 75 gallons provides the swimming space this species needs, along with strong aeration and filtration. Maintain steady conditions between 72–78°F, pH 8.1–8.4, and salinity near 1.023–1.025. Because it is not fully reef safe, fish-only or fish-only-with-live-rock systems prevent coral nipping. Offer frozen mysis, brine, chopped seafood, and quality preparations, feeding two to three small meals daily.

Is a Sunburst Butterfly hard to keep?
It adapts well when water conditions remain stable and feeding is consistent.

How often should I feed this fish?
Two to three small meals daily match natural grazing habits.

Will it eat Aiptasia?
Some individuals may consume Aiptasia, but results vary.

Tank Mates & Compatibility

The Sunburst Butterfly mixes well with peaceful community fish and can be kept singly or in groups introduced at the same time. Avoid aggressive species to prevent stress. Because it may nip soft corals, it is best suited to non-reef environments.

Can I keep more than one Sunburst Butterfly?
Multiple individuals can coexist if added together into a larger tank.

Which fish should be avoided?
Aggressive or territorial fish can create stress and should be avoided.

Does it bother invertebrates?
It may pick at small tube-dwelling invertebrates but usually leaves larger ornamental species alone.

Aquaculture/Availability

Currently, captive-bred Sunburst Butterflies are not widely available, so most offerings come from wild collection. These fish adapt well with slow acclimation and a varied diet.

Are captive-bred Sunburst Butterflies available?
Captive-bred specimens are not common at this time.

Does wild collection affect care?
Wild individuals acclimate well when temperature and salinity changes are gradual.

How often are they available?
Availability shifts throughout the year based on seasonal collection.

FAQ

How big does a Sunburst Butterfly get in a home aquarium?
Most reach about 5 to 6 inches, with growth shaped by diet quality and tank stability.

Is a Sunburst Butterfly suitable for a beginner marine hobbyist?
Yes, it is one of the more beginner-friendly butterflyfish due to its broad diet and tolerance of consistent parameters.

What do Sunburst Butterflies eat in captivity?
They accept frozen mysis, brine, chopped seafood, and quality marine preparations. A mixed diet supports condition and coloration.

How do I transition this fish from live foods to prepared foods?
Begin with small amounts of prepared foods mixed into familiar frozen options, increasing the ratio over several days.

What tank size works best for long-term care?
A minimum of 75 gallons offers proper swimming space and reduces competition.

Can Sunburst Butterflies live with coral?
They may nip soft or LPS corals, making them unsuitable for coral-heavy reef systems.

Does this species show aggression?
It is generally peaceful, though mild territorial behavior may appear if the tank is undersized.

What water parameters are ideal for this species?
Stable conditions within 72–78°F, pH 8.1–8.4, and salinity near 1.023–1.025 support long-term health.