Citron Butterflyfish – Chaetodon citrinellus
The Citron Butterflyfish is a vibrant and striking marine fish known for its bright yellow body with blue and orange accents. It is a popular choice among aquarium enthusiasts due to its active behavior and colorful appearance.
Key Features
- Species: Chaetodon citrinellus
- Common Name: Citron Butterflyfish
- Size: Up to 10 cm (4 inches)
- Coloration: Bright yellow with blue and orange markings
- Behavior: Active, social, and often seen in small groups
| Characteristic | Detail |
|---|---|
| Origin | Western Pacific Ocean |
| Water Temperature | 24–28°C |
| Water pH | 8.1–8.4 |
| Water Hardness | 8–12 dGH |
FAQ
What is the typical size of a Citron Butterflyfish?
The Citron Butterflyfish can grow up to 10 cm (4 inches) in length.
What kind of water conditions does it prefer?
It thrives in water temperatures between 24–28°C, with a pH of 8.1–8.4 and water hardness of 8–12 dGH.
Is the Citron Butterflyfish suitable for a community aquarium?
Yes, it is generally suitable for community tanks when kept with compatible fish species and in a well-maintained environment.

Leonard McLean –
The Citron Butterflyfish is a stunning addition to my reef tank. Its bright yellow color and active swimming patterns make it a highlight. It adapts well to the tank conditions and stays healthy after a few weeks.
Virginia James –
I’ve had this fish for about two months now. It’s very active and enjoys the open space. The coloration is vivid and it looks great with the other fish in the tank. Only minor adjustment needed in water parameters.
Neil Butler –
Beautiful fish with a unique appearance. It’s easy to care for and doesn’t seem to be aggressive. I’m happy with the purchase and would recommend it to others with a medium-sized aquarium.