What makes melanoid axolotls black?

Melanoid axolotls have an increased number of melanophores (dark pigment cells) and completely lack iridophores (shiny reflective cells). This gives them a solid dark appearance without any sparkle or shine.

Are melanoid axolotls rare?

No, melanoid axolotls are fairly common in the pet trade and typically cost $35-70. They are one of the standard morphs available from most breeders.

Melanoid Axolotl: The Black Morph Explained

The melanoid axolotl is one of the most striking morphs available. Its solid dark coloration ranges from deep gray to jet black, creating a dramatic appearance that stands out in any aquarium.

Appearance

Melanoid axolotls have:

Body: solid dark gray to black, no shiny or reflective spots
Eyes: dark, blending with the body color
Gills: dark gray to black, sometimes with a reddish tint from blood flow
Belly: slightly lighter than the back, but still dark
Texture: matte, velvety appearance (no iridescent shine)

The key visual difference from wild type axolotls is the complete absence of shiny gold or silver speckling. Where a wild type sparkles, a melanoid is uniformly dark and matte.

Melanoid vs Wild Type

Feature	Melanoid	Wild Type
Base color	Solid dark gray/black	Dark brown-green with gold speckles
Iridophores	Absent	Present (creates shine)
Melanophores	Increased	Normal amount
Overall look	Matte, uniform	Speckled, shiny
Belly	Dark	Lighter with speckling

Genetics

The melanoid trait is controlled by the “m” gene. It is autosomal recessive, meaning:

Both parents must carry the gene to produce melanoid offspring
Breeding two melanoids produces 100% melanoid babies
A melanoid bred with a non-carrier produces 0% melanoid offspring (but all carry the gene)

Melanoid can combine with other genes. A melanoid albino (melanoid + albino genes) creates an interesting dark-eyed white axolotl. A melanoid copper produces a very dark brownish animal.

Care Requirements

Melanoid axolotls have identical care needs to all other morphs:

Temperature: 16-20°C
pH: 6.5-8.0
Diet: earthworms, pellets, bloodworms
Tank: minimum 75 liters with hides

Their dark coloration can make it slightly harder to spot health issues like redness or fungal patches compared to lighter morphs. Regular close observation during feeding time helps catch any problems early.

Price and Availability

Standard melanoid: $35-70
GFP melanoid: $60-120 (glows green under UV, dramatic contrast against dark body)
Melanoid copper: $50-100

GFP melanoid axolotls are particularly popular because the green fluorescence contrasting against the dark body creates a spectacular visual effect under UV light. Explore all available morphs in our axolotl colors guide.