Axolotls are a fascinating species of salamander whose scientific name is Ambystoma mexicanum. They have large, feathery gills, finned tails, and wide heads, and come in a variety of different colors and patterns, known as morphs. very Clean water (Nitrate under 10) as well as cold water (68-70F) are extremely important to an Axolotls health. When these factors are neglected the animals gills will shrink up and get "burnt" and can result in death. low light is also crucial due to their under developed eyes. Recommended tank size is 40 gallons at adult size.