Overview
The Harlequin Filefish (Oxymonacanthus longirostris) is a advanced saltwater species known for its blue-green, orange spots coloration. Eats Acropora polyps. Mid.
Origin & Appearance
Origin: Indo-Pacific.
Colors: Blue-Green, Orange spots.
Body Shape: Compressiform (laterally flat). Typical adult dimensions: 12.0 x 1.8 x 6.6.
Sexual Dimorphism: Minimal.
Tank & Water Requirements
| Min Tank Size | 53 gallons |
| Temperature | 75–79°F |
| pH Range | 8.1–8.4 |
| Water Hardness (GH) | dKH 8-12 |
| Bioload | medium |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Mid |
Behavior & Activity
Slow deliberate reef picker; noses into Acropora branches to eat polyps; careful precise movement
Speed: 30/100Aggression: 3/10diurnal
Breeding
Not bred at home
Common Diseases
💊 Ich💊 difficult to feed
Expert Notes
Eats Acropora polyps; hard to keep