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Triangle Butterflyfish (Chaetodon triangle)

Find Triangle Butterflyfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Triangle Butterflyfish
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Where to buy Triangle Butterflyfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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About Triangle Butterflyfish

The Triangle Butterflyfish has a distinctive white to pale yellow body with prominent black triangular or chevron-shaped markings radiating from the eye and along the body. The dorsal and anal fins display yellow coloration with black banding. A characteristic black eye stripe extends through the eye, and the tail is truncated with yellow and black patterns.

Key facts

Difficulty Level
Moderate - Triangle Butterflyfish requires standard marine aquarium maintenance and intermediate fish keeping skills.
Temperament
Peaceful
Reef safety
Reef Safe with Caution
Appearance
The Triangle Butterflyfish has a distinctive white to pale yellow body with prominent black triangular or chevron-shaped markings radiating from the eye and along the body. The dorsal and anal fins display yellow coloration with black banding. A characteristic black eye stripe extends through the eye, and the tail is truncated with yellow and black patterns.
Water Parameters
Temperature: 75-82°F pH: 8.1-8.3 Salinity: 1.02-1.025
Family
Chaetodontidae
Care Level
Moderate
Min tank size
75 gallons
Max Size
5
Origin
Indo-Pacific region, ranging from the Red Sea and East Africa through to the Indo-Australian archipelago and extending to the Great Barrier Reef. Found in coral-rich areas at depths of 5-40 meters.
Common Health Issues
Ich (white spot disease), head and lateral line erosion (HLLE), parasitic infections
Care Requirements
• Minimum 75 gallon tank • Temperature range: 75–82°F • pH: 8.1–8.3 • Salinity: 1.020–1.025 SG • Requires plenty of live rock and coral formations for grazing and refuge; prefers established reef systems with stable conditions • Sensitive to water quality changes and copper-based treatments; acclimate slowly and avoid sudden parameter shifts

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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