Common name: Margined coralfish

Scientific name: Chelmon marginalis Richardson, 1842
Longnose Butterfly - 3 Stripe
Chelmon marginalis水中を泳ぐマージンドコーラルフィッシュ

General information

The Eastern Talma, scientifically known as Chelmon marginalis, is a distinctive species of butterflyfish. It is closely related to the more commonly known Copperband Butterflyfish (Chelmon rostratus). With its elongated snout and striking coloration, it is a sought-after species for advanced marine aquarists. The Eastern Talma is characterized by its white body with thin black vertical stripes and a yellow margin on its dorsal, anal, and caudal fins.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 26 °C (75 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
18 cm (7″)
Care level
Moderate to easy
Diet
Carnivore
Social
Solo
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Butterflyfish
    Chaetodontidae
  6. Genus
    Copperband Butterflyfish
    Chelmon
  7. Species
    Margined coralfish
    Chelmon marginalis Richardson, 1842
  8. Synonyms
    Chelmo tricinctus Castelnau, 1875
    Chelmon rostratus marginalis Richardson, 1842

Care

Chelmon marginalis requires a well-established aquarium with plenty of live rock for grazing and hiding. This species is known for being somewhat delicate and requires pristine water conditions. A varied diet is crucial, including small crustaceans, worms, and prepared foods. Due to its specialized feeding habits, it may not be suitable for beginners.

Reproduction

In the wild, butterflyfish generally form monogamous pairs during the breeding season. However, breeding Chelmon marginalis in captivity is quite challenging and rarely achieved by hobbyists. They are broadcast spawners, releasing eggs and sperm into the water column.

Habitat

The Eastern Talma is found in the Western Pacific, from the Great Barrier Reef to the Solomon Islands. It inhabits coral-rich areas of lagoons and outer reefs, often seen at depths where light is sufficient for coral growth.