Reef Butterflyfish (Chaetodon sedentarius) – Spotfin Butterflyfish
The Reef Butterflyfish, also known as the Spotfin Butterflyfish, is a bold and eye-catching species that brings classic butterflyfish beauty to larger saltwater aquariums. Its bright yellow body is marked with dark vertical bands, a distinctive black spot near the tail, and a noticeable black blotch on the dorsal fin, giving it a striking, high-contrast appearance.
Found throughout the Western Atlantic and Caribbean, the Reef Butterflyfish is an active swimmer that appreciates plenty of open space along with live rock for grazing and shelter. It has a generally peaceful temperament and does well with other calm, similarly sized fish, making it a solid choice for community fish-only or FOWLR systems.
| Specifications |
|---|
| Scientific Name: Chaetodon sedentarius |
| Common Name: Spotfin Butterflyfish |
| Origin: Western Atlantic and Caribbean |
| Temperament: Peaceful, active |
| Water Conditions: Saltwater, temperature 75–82°F, salinity 1.020–1.025 |
| Size: Up to 4 inches (10 cm) |
| Compatibility: Calm, similarly sized fish; avoid aggressive or fast-swimming species |
FAQ
What is the typical size of a Reef Butterflyfish?
The Reef Butterflyfish can grow up to 4 inches (10 cm) in length.
What kind of environment does the Reef Butterflyfish need?
It requires a spacious saltwater aquarium with plenty of open swimming area and live rock for grazing and shelter.
Is the Reef Butterflyfish compatible with other fish?
Yes, it is generally peaceful and does well with calm, similarly sized fish in community or FOWLR setups.
Rebecca Grant –
The Reef Butterflyfish is a stunning addition to my saltwater tank. Its bright yellow body with dark bands and black spots makes it stand out. It’s active but not aggressive and enjoys the live rock. I’ve had it for six months and it’s thriving with my other peaceful fish.
Alison Hamilton –
Beautiful fish with a classic butterflyfish look. It’s active and seems happy in the tank. I provide plenty of open space and live rock, which it uses for grazing. A bit shy at first but settles in well after a few weeks.
Alison Walsh –
Great choice for a saltwater aquarium. The contrast in colors is impressive. It’s peaceful and doesn’t bother other fish. I appreciate the detailed care notes included with the purchase.