Chelmon

Chelmon is a genus of marine fish belonging to the family Chaetodontidae, commonly known as butterflyfish. The genus comprises three recognized species: Chelmon rostratus, Chelmon marginatus, and Chelmonops curiosus, with the latter species previously placed in the genus Chelmon. These fish are characterized by their elongated snout, which gives them a distinctive appearance and aids in their foraging behavior. Their bodies are typically brightly colored, with contrasting patterns and markings, making them popular in the aquarium trade.

Margined coralfish – Chelmon marginalis

Common Names

The fish belonging to the genus Chelmon are commonly known as "longnose butterflyfish" due to their elongated snouts. Chelmon rostratus is also known as the "copperband butterflyfish" or "banded butterflyfish" due to its distinctive copper-colored bands. Chelmon marginatus is referred to as the "orange-lined butterflyfish" for its vibrant orange lines along its body.

Characteristics

Members of the Chelmon genus share several common characteristics, including:

  • Elongated Snout: The most distinctive feature of these fish is their long, narrow snout, which is used for probing crevices and extracting food from hard-to-reach areas.
  • Brightly Colored Body: Chelmon species exhibit a variety of vibrant colors and patterns, often with contrasting markings. This coloration serves both for camouflage and communication.
  • Compressed Body: Their bodies are laterally compressed, allowing them to maneuver easily through coral reefs and other complex environments.
  • Small Mouth: They have small, protractile mouths adapted for feeding on small invertebrates.

Environment

Chelmon species are primarily found in the tropical waters of the Indo-Pacific region. They inhabit coral reefs, lagoons, and rocky areas with abundant invertebrate life. These fish prefer clear, shallow waters with good visibility.

References

* [FishBase: Chelmon](https://www.fishbase.se/summary/Chelmon.html) * [World Register of Marine Species: Chelmon](https://www.marinespecies.org/aphia.php?p=taxdetails&id=126527)