Orange Spotted Filefish (Oxymonacanthus longirostris)
Reef Compatible – With Caution
Care Level – Expert-only
Disposition – Peaceful
Min. Tank Size – 24 gallons
Mature Size – 5 inches
Specifications
| Feature | Size: M (1″ to 2″) |
|---|---|
| Species | Oxymonacanthus longirostris |
| Compatibility | Reef compatible with caution |
| Recommended Tank Size | Minimum 24 gallons |
| Adult Size | Up to 5 inches |
FAQ
Is this filefish safe to keep in a reef tank?
This filefish is reef compatible with caution. It may pose a threat to soft corals and anemones, so careful monitoring is required.
What is the expected mature size of this fish?
The mature size of this filefish is up to 5 inches.
What level of experience is required to care for this species?
This species requires expert-level care due to its specific needs and potential interactions with reef inhabitants.




Tim Ince –
I’ve kept this filefish for six months in a 30-gallon tank with live rock. It’s peaceful and stays near the lower tank area. I’ve had to monitor it closely around corals, but it hasn’t damaged any. Good for experienced reef keepers who want a unique, active fish.
Owen North –
The fish arrived healthy and active. It’s not aggressive, and it’s adapted well to the tank environment. I noticed it occasionally nips at soft polyps, so I’ve rearranged some corals to avoid contact. Overall, a solid addition to a mature reef setup.
Blake Buckland –
It’s a bit shy at first, but settles into the tank after a week. I’m cautious about its interactions with corals. It’s not a beginner-friendly species, and I’d recommend only for those with a solid reef experience.