Copper Axolotl

Looks how to spot one

Smooth, moist skin with feathery external gills and a finned tail; neotenic, retaining larval features into adulthood.

The copper axolotl has a soft, smooth body with a long tail fin and four delicate limbs. Its most striking features are the feathery external gills that fan out from the sides of the head, usually bright pinkish-red, and the copper-coloured eyes. The body is a warm sandy-pink or rusty-copper tone with scattered darker spots and iridescent flecks.14

Personality what they are like

Copper axolotls are gentle, mostly sedentary creatures that spend long periods resting on the bottom. They are solitary by nature and do not school. They have poor eyesight and rely on smell and suction to catch food, sometimes trying to eat anything that fits in their mouth, including smaller tankmates. They are not aggressive but can nip at each other if housed together when young.13

Daily activity how busy a day looks

Low activity needs. They are mostly nocturnal but may become active during the day if given plenty of hiding places and subdued lighting. Strong water currents cause stress, so a gentle flow is essential.13

Grooming and care the hands-on bits

Minimal grooming. They should never be handled unless absolutely necessary; use a fine mesh net if removal is required to avoid damaging their delicate skin and gills. Regular water changes and siphoning of waste are vital to maintain water quality.31

Home where they are happiest

Strictly aquatic. Requires a large aquarium (minimum 75 litres, ideally 80-100 cm length) with very low water flow (use a spray bar). Substrate must be fine sand or bare bottom; gravel causes fatal impaction. Temperature must be kept at 16-20°C; above 24°C causes severe stress and death. An aquarium chiller is needed in warm climates. Lighting should be dim; floating plants help diffuse light. A tight-fitting lid is necessary as they can jump. They need hard, alkaline, well-oxygenated water with weekly large water changes. In some countries, axolotls may be protected or require permits due to their critically endangered wild status; always check local regulations before keeping one.135

Food basics what goes in the bowl

Carnivorous. Staple foods include live or frozen earthworms (nightcrawlers), blackworms, and high-quality sinking axolotl pellets. They can also be offered brine shrimp as treats. Avoid red meat, mammalian livers, or poultry as these cause fatty liver disease. Juveniles should be fed daily; adults can be fed every other day. Uneaten food must be removed promptly.13

Company who they like around

Solitary. Best kept alone or with axolotls of the exact same size. Juveniles often bite off each other's limbs and should not be housed together. Adults of the same sex can sometimes cohabitate in a spacious tank, but breeding pairs must be separated to prevent overbreeding stress on the female. Do not house with fish or other amphibians; sucker-mouth catfish (plecos) can damage their skin.13

The story where it all began

The copper axolotl is a colour morph of the axolotl (Ambystoma mexicanum), a neotenic salamander native to the ancient lake systems of Mexico City. Unlike the wild-type axolotl, which is dark with olive or black tones, the copper morph has a warm sandy-pink or rusty-copper body with copper-coloured eyes. This appearance is caused by a recessive mutation in the Tyrp1 gene, which disrupts the normal production of dark pigment (eumelanin) while allowing reddish and yellowish pigments to show. The result is a partial albino form where the melanophores appear brownish rather than black. Copper axolotls have been bred in captivity by dedicated pet breeders and are now available in the aquarium trade, though they remain one of the rarer common morphs. Like all axolotls, they are critically endangered in the wild due to habitat loss and pollution in Lake Xochimilco.461