Overview
The Spanish Dancer Nudibranch (Hexabranchus sanguineus) is a advanced saltwater species known for its red-orange, undulating body coloration. Largest nudibranch. Surfaces to Mid.
Origin & Appearance
Origin: Indo-Pacific.
Colors: Red-Orange, Undulating body.
Body Shape: Elongate (long/slender). Typical adult dimensions: 40.0 x 4.8 x 6.0.
Sexual Dimorphism: Minimal; hermaphroditic.
Tank & Water Requirements
| Min Tank Size | 79 gallons |
| Temperature | 75–81°F |
| pH Range | 8.1–8.4 |
| Water Hardness (GH) | dKH 8-12 |
| Bioload | very-high |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Surfaces to Mid |
Behavior & Activity
Slow reef crawler; when disturbed, swims by undulating body in dramatic red-orange dancing motion in open water
Speed: 10/100Aggression: 1/10diurnal
Breeding
Difficult; hermaphroditic
Common Diseases
💊 Starvation💊 most need specific food source
Expert Notes
Largest nudibranch; undulates when swimming