Muller's Butterflyfish (Chelmon mulleri)

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Muller's Butterflyfish

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Chelmon mulleri

473 Litres (125 US G.)

15.2-17.8cm (6-7 ")


8.1 - 8.4

20-25°C (68 -77 °F)

8-12 °d

1:1 M:F

Pellet Foods
Flake Foods
Live Foods

9-10 years



Additional names

Muller's Butterflyfish, Blackfin Coralfish

Origin[edit | edit source]

Endemic to Western Pacific: found exclusively on coastal reefs and estuaries of Queensland. Recently recorded from northwestern Australia.

Sexing[edit | edit source]

Not possible to visually sex.

Tank compatibility[edit | edit source]

A generally peaceful fish but should not be kept with other Butterflyfish nor with any stress-inducing fish. House in a reef tank with caution, they will pick on feather dusters and anemones and may well nip at invertebrates too.

Diet[edit | edit source]

Can be difficult to feed. Should be offered a variety of foods including mysis shrimp, vitamin enriched brine shrimp, or frozen whole cockle. Has been used for Aiptasia control

Feeding regime[edit | edit source]

Feed several times a day.

Environment specifics[edit | edit source]

Does best in a large established marine system with hiding places in live rock.

Behaviour[edit | edit source]

Exercise caution, as they can nip invertebrates.

Identification[edit | edit source]

Darker than the similar Copperband Butterflyfish.

Pictures[edit | edit source]

External links[edit | edit source]