Overview
The Olm (Proteus) (Proteus anguinus) is a advanced freshwater species known for its pink-white (cave-adapted, blind) coloration. Cave-dwelling. Bottom.
Origin & Appearance
Origin: Dinaric Alps caves (Slovenia/Croatia).
Colors: Pink-White (cave-adapted, blind).
Body Shape: Salamander/Newt (elongate amphibian). Typical adult dimensions: 30.0 x 4.5 x 4.5.
Sexual Dimorphism: Subtle; males have swollen cloaca during breeding.
Tank & Water Requirements
| Min Tank Size | 53 gallons |
| Temperature | 43–54°F |
| pH Range | 7–8 |
| Water Hardness (GH) | 5-15 |
| Bioload | low |
| Oxygen Demand | medium |
| Plant Safe | mostly |
| Aquarium Position | Bottom |
Behavior & Activity
Extremely slow cave swimmer; near-motionless in dark cave pools; eel-like undulating swimming when active; blind
Speed: 15/100Aggression: 2/10nocturnalSchooling (3+)
Breeding
Extremely difficult
Common Diseases
💊 Chytrid fungus💊 bacterial💊 red-leg
Expert Notes
Cave-dwelling; blind; lifespan 100+ years