Blackmouth Bicolor Chromis
Neoglyphidodon nigroris
| Stock | Variations | Price | Quantity |
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Monday – Friday 8 AM – 9 PM
Saturday 12 PM – 4 PM
Sunday 12 PM – 9 PM
Healthy, stable animals from vetted suppliers — inspected before packing, shipped overnight. Decades of experience built this model so we can deliver premium livestock at 30%+ less than you'd pay elsewhere.
| Care Level | Easy |
|---|---|
| Temperament | Aggressive |
| Reef Safe | Yes |
| Functional Benefit | Ornamental Only |
| Diet Type | Omnivore |
| Mininum Tank Size | 30 gallons |
| Max Size | 5 inches |
| Temperature | 72–78°F |
| pH Range | 8.1–8.4 |
| Specific Gravity | 1.022–1.025 |
Often sold as the Blackmouth Chromis or Behn’s Damselfish, the Blackmouth Bicolor Chromis (Neoglyphidodon nigroris) is bright yellow with two horizontal black bars as a juvenile, then develops a darker bicolor look with maturity.
What You’ll Observe:
- Hanging close to rockwork and returning to the same crevice when startled
- Quick dashes into the water column at feeding time, then back to cover
- Juvenile striping that is most noticeable early on, with coloration shifting as it grows
- A consistent home base it patrols around the reef structure
Provide porous live rock with multiple caves and sight breaks so it can choose a stable home site while still leaving open swimming space. Offer a mixed omnivore menu (quality pellets plus frozen foods, with some plant-based variety) in small portions once or twice daily for steady behavior and color.
Is this fish a chromis or a damsel?
It is a damselfish that is often marketed under chromis common names.
Does the yellow juvenile pattern stay long-term?
Most references note a shift from the bright juvenile bars to a darker adult pattern as the fish matures.
Does it use a specific sleeping spot?
It commonly settles into crevices in the rockwork, especially at night or when startled.
Will it accept pellet and frozen foods quickly?
It typically transitions well to prepared foods when offered a varied mix of meaty and plant-based items.
Why do some listings use different scientific names?
Older names (including Paraglyphidodon nigroris) appear as synonyms in taxonomy references, with Neoglyphidodon nigroris treated as the accepted name.
Each fish is checked for strong appetite and activity before we approve it for your tank.
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