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AmphibianTerrestrialIntermediate
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Mosaic axolotl
Ambystoma mexicanum "Mosaic"
An extremely rare genetic variant of the axolotl, characterized by a unique two-tone mosaic pattern caused by chimerism. Requires clean, cold water and specific husbandry.
Class:Amphibia
Order:Caudata
Family:Ambystomatidae
Genus:Ambystoma
Species:Ambystoma mexicanum "Mosaic"
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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: The axolotl is native to the lake complex of Xochimilco near Mexico City. The "Mosaic" morph is an artificial variant developed in captivity, arising from the fusion of two distinct embryos (chimerism).
Taxonomy and Genetics: Family Ambystomatidae, genus Ambystoma. The Mosaic variation is not a genetically inheritable trait but rather a rare case of developmental chimerism, containing distinct cell lines (typically leucistic and wild-type).
Behavior and Habits: A strictly aquatic and neotenic species (retains larval features such as external gills throughout life). It exhibits a peaceful, benthic lifestyle, spending most of its time walking on the substrate or resting.
Morphology: Grows to 20-30 cm (8-12 inches) in length. Features a broad head, feathery external gills, and a unique asymmetrical pattern of pink/leucistic and dark/wild-type patches across the skin and gills.
Care, breeding and tankmates
Terrarium Setup: Requires a dedicated aquarium (often called a tank or terrarium) of at least 20-25 gallons (80-100 liters) per adult. The substrate must be either fine sand (under 1mm) or a bare bottom to prevent lethal gravel ingestion.
Lighting and Heating: Requires very dim lighting, as axolotls lack eyelids and prefer shade. Temperature is critical: it must be kept consistently between 15-18°C (59-64°F). Temperatures above 20-22°C (68-72°F) cause severe heat stress and illness.
Humidity and Hydration: Strictly aquatic species, requiring a fully filled aquarium with clean freshwater. No dry land area is needed. Regular weekly partial water changes are essential to maintain low nitrate levels.
Feeding and Supplementation: Carnivorous. Feed on live earthworms, specific axolotl pellets, bloodworms, and small pieces of freshwater fish. No direct calcium supplementation is necessary if fed high-quality earthworms.
Compatibility: Best housed alone or with similarly sized axolotls. Never house with fish, as they will nip at the delicate external gills, and smaller fish will be eaten by the axolotl.
Health and Common Diseases: Susceptible to fungal infections on the gills (columnaris or saprolegnia) caused by elevated water temperatures or poor water quality. Ingestion of gravel causes fatal intestinal impaction.
Geographic Origin and Distribution
The axolotl is native to the lake complex of Xochimilco near Mexico City. The "Mosaic" morph is an artificial variant developed in captivity, arising from the fusion of two distinct embryos (chimerism).
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
- 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
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.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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