Marbled salamanders (Ambystoma opacum) are found in the eastern United States. Keep their tanks cool, and make sure that any lighting does not heat the tank over 68 to 78 degrees Fahrenheit. Feed your salamanders earthworms once or twice weekly. Cage temperatures can cool to the mid-50s during the winter, but salamanders will become semi-dormant. Keep the substrate moist so that these attractive salamanders don't dry out. Provide them with plenty of pieces of bark to use as hiding places.
For more information, read Caring For Your Amphibian.