Saltwater Fish
Chaetodon semilarvatus
Chaetodon semilarvatus
(Golden Butterflyfish)

Species Description…

Scientific Name: Chaetodon semilarvatus
Common Name: Golden Butterflyfish
Species Group: Butterflyfish
Habitat: Reef Safe with Caution
Care Level: Advanced
Temperament: Peaceful
Diet Type: Omnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 12 (inches)
Min Aquarium Size: 125 (gallons)
Native Range: Red Sea and Western Indian Ocean
Chaetodon Semilarvatus - The Golden Butterflyfish

Chaetodon Semilarvatus (The Golden Butterflyfish)

Overview

  • Native to the Red Sea and the western Indian Ocean, primarily inhabiting coral reefs and rocky coastal areas.
  • Recognized for its vibrant golden-yellow body adorned with thin blue vertical lines.
  • A hardy and visually striking butterflyfish that adapts well to captivity with proper care.
  • Often seen in pairs, as it forms strong social bonds with its mate in the wild.
  • Best suited for a well-maintained marine aquarium with stable water parameters and live rock structures.

Feeding

  • Omnivorous, feeding on coral polyps, small invertebrates, and algae in the wild.
  • Thrives on a diet consisting of sponge-based foods, frozen mysis shrimp, and marine algae in captivity.
  • Readily adapts to prepared foods but benefits from a variety of fresh and frozen meals.
  • Multiple small feedings per day help ensure sustained energy levels and good digestion.
  • A well-balanced diet maintains strong immune health and vibrant coloration.

Habitat

  • Prefers coral reef environments with ample shelter and moderate water movement.
  • Commonly found near reef edges and areas rich in coral growth where food sources are abundant.
  • Aquarium setups should include live rock to support natural foraging behavior.
  • Requires high-quality water conditions with efficient filtration to prevent stress-related issues.
  • Providing shaded areas and open swimming spaces ensures a comfortable and naturalistic environment.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C) to promote overall well-being.
  • Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
  • Requires regular water changes and proper filtration to maintain optimal water quality.
  • Not considered reef-safe, as it has a tendency to graze on corals and small sessile invertebrates.
  • Providing live rock formations enhances grazing opportunities and supports its natural feeding instincts.

Compatibility

  • Generally peaceful but can be territorial toward other butterflyfish.
  • Compatible with tangs, angelfish, and other semi-aggressive marine species.
  • Not ideal for reef aquariums due to its tendency to consume coral polyps.
  • Should be housed with similarly sized fish to prevent intimidation or competition for food.
  • Providing a spacious environment and well-defined territories minimizes aggression.

Aquarium Behavior

  • An active swimmer that enjoys patrolling the aquarium and exploring rock formations.
  • Often seen grazing on rock surfaces and interacting with other tank inhabitants.
  • May take time to fully acclimate but becomes more comfortable with consistent care.
  • Providing live rock helps simulate its natural environment and supports its feeding behaviors.
  • Over time, it may recognize its caretaker and display curiosity, particularly during feeding times.