Moorish Idol 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.
Quick fact: Zanclus cornutus belongs to the family Zanclidae. Care level: advanced.
Moorish Idol Scientific Classification
| Rank | Classification |
|---|---|
| Family | Zanclidae |
| Genus | Zanclus |
| Species | Zanclus cornutus |
| Water type | saltwater |
Moorish Idol Natural Habitat
Moorish Idol Appearance & Size
Moorish Idol Behavior & Temperament
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 |
Moorish Idol 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 |
Important: Always dechlorinate tap water before adding it to the tank. Chlorine and chloramines damage a fish's gills and reduce life expectancy.
Interesting Facts About Moorish Idol
- Moorish Idols are the sole member of their family, Zanclidae
Species Related to Moorish Idol
Related Species & Guides
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Editorial review
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.