Double Bar Chromis (Chromis opercularis)
Reef compatible: Yes
Care level: Beginner
Disposition: Peaceful
Minimum tank size: 24 gallons
Mature size: 3.5 inches
Specifications
| Feature | Value |
|---|---|
| Species | Chromis opercularis |
| Size (Adult) | 3.5 inches |
| Size (Adult Range) | 2.5″ to 3″ |
| Compatibility | Reef-safe |
| Behavior | Peaceful |
| Difficulty Level | Beginner |
| Minimum Tank Size | 24 gallons |
FAQ
Is the Double Bar Chromis suitable for a reef tank?
Yes, the Double Bar Chromis is reef compatible and does not pose a threat to coral or other invertebrates.
What is the typical adult size of this fish?
The mature size of the Double Bar Chromis is up to 3.5 inches, with a range from 2.5 to 3 inches.
Is this fish suitable for beginners?
Yes, it is classified as a beginner-friendly species due to its peaceful nature and low maintenance needs.

Blake Mills –
Added a Double Bar Chromis to my 24-gallon reef tank and it has been thriving. It’s very active and peaceful, doesn’t bother other fish or corals. Easy to care for and looks great in the tank.
Christian Berry –
This fish fits well in my tank. It’s small and doesn’t take up much space. I appreciate that it’s peaceful and doesn’t chase other fish. Good for a beginner reef setup.
Tracey Bailey –
Perfect addition to my reef tank. It’s active but calm, and it blends well with the other fish. No issues with compatibility or behavior so far.