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Axolotl (Chimera)

Ambystoma mexicanum "Chimera"

A rare genetic chimera morph, showing a split coloration down the middle of the body, usually half leucistic and half wild-type.

Taxonomy
Class:Amphibia
Order:Caudata
Family:Ambystomatidae
Genus:Ambystoma
Species:Ambystoma mexicanum "Chimera"

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Environment

Terrestrial

Humidity

100 %

Day temperature

14 - 20 °C

Night temperature

14 - 20 °C

UVB

None

Species description

Geographical Origin and Habitat: Originally endemic to the high-altitude lake system of the Valley of Mexico (Lake Xochimilco and Lake Chalco). They are critically endangered in the wild. They inhabit the cold, dark bottoms of lakes, sheltered by aquatic plants and root systems.
Taxonomy and Genetics: Family Ambystomatidae. Commonly known as the Axolotl. It is a neotenic salamander, meaning it reaches sexual maturity without undergoing metamorphosis, retaining larval characteristics such as external gills and a tail fin.
Behavior and Habits: Quiet, sedentary, bottom-dwelling animal. They move slowly along the substrate but can swim rapidly using tail movements when startled. They possess a powerful suction feeding mechanism and will consume any moving prey that fits in their mouth.
Morphology: Flattened head with a wide mouth and lidless eyes. Features three pairs of external gills with vascularized filaments. The Chimera morph is a rare developmental anomaly resulting in a split coloration down the center of the body (typically half wild-type and half leucistic).

Care, breeding and tankmates

Terrarium Setup: Strictly aquatic. Requires a large aquarium (minimum 80-100 cm in length). Maintain very low water flow using a spray bar to avoid stress. Use fine sand or leave the bottom bare; never use small gravel, as it can be ingested and cause fatal impaction.
Lighting and Heating: Keep water cold, strictly below 20°C. Temperatures above 24°C cause severe stress and fungal infections. Chillers are mandatory in warm climates. Provide dim, shaded lighting using floating plants.
Humidity and Hydration: Aquatic species. Requires clean, hard, and well-oxygenated water. Perform large weekly water changes and siphon organic waste. Always use a high-quality water dechlorinator; reverse osmosis water should be remineralized.
Feeding and Supplementation: Carnivorous. Feed earthworms, blackworms, or high-quality sinking salmon pellets. Do not feed mammalian or avian meat (like beef heart) as they cannot digest it properly.
Compatibility: Must be kept in a species-only tank, or only with individuals of the exact same size. Larger individuals will bite limbs or gills off smaller ones. Do not house with sucker-mouth fish (like Plecostomus), which graze on the axolotl's skin.
Health and Common Diseases: Prone to fungal infections (Saprolegnia) if temperatures rise. Extremely sensitive to heavy metals (copper, iron) in tap water. Possesses remarkable regenerative abilities, able to regrow lost limbs and organs.

Geographic Origin and Distribution

Originally endemic to the high-altitude lake system of the Valley of Mexico (Lake Xochimilco and Lake Chalco). They are critically endangered in the wild. They inhabit the cold, dark bottoms of lakes, sheltered by aquatic plants and root systems.

Origin

Selective breeding and cultivarsCentral America and Caribbean

Amphibian profile

Diet
No verified data available
Life expectancy
No verified data available
Adult size
30 cm
The catalog's scalar value is 30 cm. The AmphiBIO v1 source reports a maximum adult measurement of 30 cm for this species, recorded as total length (TL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
Lifestyle/Microhabitat
No verified data available
Activity cycle
No verified data available
Sociality
No verified data available
Reproduction
No verified data available
Toxicity
No verified data available
Life stage
No verified data available
Handling tolerance
No verified data available
Brumation
No verified data available
Molting
No verified data available

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Last updated: 08/10/2026
Axolotl (Chimera) (Ambystoma mexicanum "Chimera") Care Guide & Terrarium Setup | Atlarium