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Fish

Raccoon butterflyfish

Chaetodon lunula
French name : Poisson-papillon à masque

The raccoon butterflyfish is a marine fish of the family Chaetodontidae, widespread across the Indo-Pacific. It has a yellow to orange body, a black eye band bordered with white that gives a raccoon-mask appearance, and a dark saddle across the upper rear body. It is a relatively hardy and adaptable butterflyfish, often kept singly or as a pair, and is generally peaceful though it can be bold at feeding time. It needs a spacious tank with plenty of live rock for grazing and shelter and stable water quality. It is an omnivore feeding on algae, small invertebrates, and in the wild coral polyps and anemones, so a varied captive diet of frozen, meaty and prepared foods is important. It is not reliably reef-safe, as it may nip corals and anemones. One of the more durable butterflyfish, it is a good choice for fish-only or carefully chosen setups managed by intermediate keepers.

Water
Marine
Origin
Indo-Pacific reefs
Adult size
20 cm
Diet
Omnivore
Temperament
Peaceful
Difficulty
Intermediate
Raccoon butterflyfish (Chaetodon lunula)
Illustration

Water parameters

Temperature24 – 27 °C
pH8.1 – 8.4
Carbonate hardness (KH)8 – 12 °dKH
Salinity33 – 35 SG

Tank & stocking

Minimum tank volume380 L
Volume budget per individual 150 L — adds up with tank-mates

“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.

Frequently asked questions

What size aquarium does Raccoon butterflyfish need?

Provide at least 380 litres to keep Raccoon butterflyfish in good conditions.

What water parameters does Raccoon butterflyfish need?

A temperature of 24–27 °C, pH 8.1–8.4, saltwater.

Is Raccoon butterflyfish peaceful or aggressive?

Its temperament is peaceful.

What does Raccoon butterflyfish eat?

Its diet: omnivore.

How big does Raccoon butterflyfish get?

Around 20 cm as an adult.

Is Raccoon butterflyfish suitable for beginners?

Care level: intermediate.

Planning a tank with Raccoon butterflyfish?

AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.

➕ Add Raccoon butterflyfish to my tank Discover AquaTender
« Add to my tank » opens AquaTender — sign in (free) and pick your aquarium.

Fish from the same biotope

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