Black Spot Foxface – Siganus unimaculatus
The Black Spot Foxface, Siganus unimaculatus, is a striking and useful marine rabbitfish, recognised for its bright yellow body, bold black-and-white facial markings and distinctive black spot on the upper rear body. Also known as the One Spot Foxface or Blotched Foxface, this species is popular in mature marine aquariums for its algae-grazing behaviour, peaceful temperament and eye-catching colour. It is generally hardy once settled and can be an excellent functional fish for larger reef or fish-only systems, but it should be treated as reef safe with caution due to possible nipping at some corals and sessile invertebrates.
Key Features
- Bright yellow body with black-and-white facial markings
- Distinctive black spot on the upper rear body
- Algae-grazing behaviour makes it ideal for reef tanks
- Peaceful temperament suitable for mature aquariums
- May nip at soft corals and sessile invertebrates
| Species | Siganus unimaculatus |
|---|---|
| Common Names | Black Spot Foxface, One Spot Foxface, Blotched Foxface |
| Temperament | Peaceful, generally hardy once established |
| Reef Safety | Caution required; may nip at soft corals and sessile invertebrates |
FAQ
What makes the Black Spot Foxface suitable for a marine aquarium?
The Black Spot Foxface is well-suited for marine aquariums due to its algae-grazing behaviour, which helps maintain tank cleanliness. Its peaceful nature and striking appearance also make it a visually appealing addition to mature reef or fish-only systems.
Is the Black Spot Foxface safe for a reef tank?
The Black Spot Foxface should be treated with caution in reef tanks. While generally peaceful, it may nip at soft corals and sessile invertebrates, so it is not fully reef-safe.
How long does it take for a Black Spot Foxface to settle in a new tank?
The Black Spot Foxface is generally hardy once settled, but the exact time to establish can vary depending on tank conditions and water parameters. Most fish adapt within a few weeks in a stable environment.
Elizabeth Gray –
I’ve had the Black Spot Foxface in my tank for six months now. It’s very active and constantly grazing on algae, which has helped reduce the need for manual cleaning. The coloration is vibrant and it looks great with the other fish. I do notice it occasionally brushes against a soft coral, so I’ve moved it slightly away from that area. Overall, a great addition to a mature reef system.
Jonathan Sanderson –
The fish arrived healthy and has been thriving in my 120-gallon tank. It’s not aggressive and stays near the back where it eats algae. I’m happy with its appearance and function. Just a small note: it did nibble on a small anemone, so I recommend keeping it away from delicate invertebrates.
Tim Scott –
This fish has become a regular part of my tank’s ecosystem. It’s calm, eats algae efficiently, and adds a lot of visual interest. I appreciate the balance it brings to the tank. I’ve kept it in a fish-only system and it’s doing well without any issues.