Overview
The Moorish Idol (Zanclus cornutus) is a saltwater fish from the family Zanclidae. It thrives at temperatures of 23–26 °C with a pH of 8.1–8.4, requiring a minimum tank size of 450 litres. Striking marine fish that is notoriously difficult to maintain in captivity. Rarely survives long-term in home aquariums due to specialized dietary needs.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Zanclidae |
| Genus | Zanclus |
| Species | Zanclus cornutus |
| Water type | saltwater |
Natural Habitat
Appearance
Behavior
Rarely survives long-term in home aquariums due to specialized dietary needs
| Trait | Value |
|---|---|
| Temperament | Striking marine fish that is notoriously difficult to maintain in captivity |
| Schooling | No |
| Activity level | active |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 23–26°C (73–79°F) | Use a reliable adjustable heater |
| pH | 8.1–8.4 | Avoid sudden swings |
| Hardness (GH) | hard dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <10 ppm | Manage through regular partial water changes |
| Min. tank | 450L (119 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- Moorish Idols are the sole member of their family, Zanclidae
📋 Full Care Guide
Ready to set up a tank for your Moorish Idol? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Moorish Idol Care Guide →Related Species
Related Species & Guides
This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.