Amphibians
Marbled salamander care guide
Ambystoma opacum
A stocky, banded mole salamander. It burrows by day and hunts at night, and does well in a cool, damp, leaf-littered terrarium.
Fossorial — deep substrate for burrowing
Marbled salamander enclosure size
Fossorial — deep substrate for burrowing. An adult marbled salamander should live in at least 20" L × 10" W × 12" H; we build toward 24" L × 12" W × 12" H (2 × 1 × 1 ft, roughly 2 sq ft of floor and about a 15-gallon glass equivalent).
- Hatchling / baby
- 16" L × 8" W × 10" H recommended · min 12" L × 8" W × 8" H
- Juvenile
- 20" L × 10" W × 12" H recommended · min 16" L × 8" W × 10" H
- Adult
- 24" L × 12" W × 12" H recommended · min 20" L × 10" W × 12" H
Temperature and heating
No heat; keep under 72°F.
- Basking / warm surface
- No basking spot
- Warm side (ambient)
- 62–70°F
- Cool side (ambient)
- 55–62°F
- Night
- Cooler is fine
Lighting and UVB
UVB: Not required; dim lighting. Run lights on a 12 hours on, 12 hours off photoperiod, on a timer, and replace UVB bulbs on the manufacturer's schedule even while they still emit visible light.
Humidity
Target 70–90%. Damp substrate, a shallow water dish and a light misting.
Substrate and depth
Coco fiber, topsoil and leaf litter. Depth: 3–4 in.
Enclosure tips and furnishing
- Cork bark
- Leaf litter
- Shallow water dish
- Moss
Build list
- Digital hygrometer + thermometer — Read humidity and temperature instead of guessing.
- Water conditioner / RO water — Chlorine and chloramine burn permeable skin.
Marbled salamander FAQ
How big should an adult Marbled salamander enclosure be?
At least 20" L × 10" W × 12" H, and we recommend building to 24" L × 12" W × 12" H — about 2 × 1 × 1 ft, or a 15-gallon glass equivalent. Fossorial — deep substrate for burrowing.
What temperatures does a Marbled salamander need?
Basking or warm surface No basking spot, warm side 62–70°F, cool side 55–62°F, night Cooler is fine. No heat; keep under 72°F.
Does a Marbled salamander need UVB?
Not required; dim lighting. Photoperiod: 12 hours on, 12 hours off.
What humidity does a Marbled salamander need?
70–90%. Damp substrate, a shallow water dish and a light misting.
What substrate is best for a Marbled salamander?
Coco fiber, topsoil and leaf litter, at a depth of 3–4 in.
How big does a Marbled salamander enclosure need to be for a hatchling?
Hatchling / baby: 16" L × 8" W × 10" H recommended, minimum 12" L × 8" W × 8" H. Scale up to the adult footprint as the animal grows.
Is there anything to be careful about when keeping a Marbled salamander?
Wash hands before and after handling, never use soap or untreated tap water, and keep handling to a minimum. Wild-caught animals may be protected — check local laws.
Sources
Put this guide to work
Apply these targets to your own marbled salamander record, then log feedings, sheds and weights against them.