Onyx (Unsexed)

Onyx is a GFP Melanoid Axolotl! This axolotl has a strikingly-long, fluffy gills and is significantly darker than many other Melanoid Axolotls we have seen.

What you see is the exact axolotl you will receive if you purchase today.

Gender: N/A

Age: ~7 months

Size: ~7 inches

Individual Axolotls are premium axolotls we choose based on top-tier physical quality and uniqueness. Each Individual Axolotl is one-of-a-kind and carefully handpicked to make sure you purchase one that truly stands out from the rest! As the name intends, every axolotl in this category is the exact one you will receive when purchased.

🖤 Onyx (Unsexed) Overview

The Onyx Axolotl is a visually captivating morph, admired for its deep, glossy black coloration that can range from charcoal gray to jet-black under certain lighting. It gets its name from the precious gemstone onyx, symbolizing mystery, strength, and elegance.

🔍 Appearance

• Color: Dark, sleek pigmentation — usually a blend of melanoid and axanthic traits, resulting in minimal iridescence and no gold flecks.

• Gills: Often appear dark red to black, blending beautifully with the body.

• Eyes: Typically black or very dark, giving a shadowy, uniform look.

• Size: Similar to standard axolotls (up to 12 inches as adults).

⚧ Unsexed Note

Since this axolotl is unsexed, it means it’s still too young to determine whether it’s male or female. As it matures (usually 8–12 months), secondary sex traits such as body shape and cloacal swelling become more noticeable.

🌊 Temperament & Care

• Temperament: Calm, docile, and easy to care for — like most axolotls.

• Tank Setup: Cool, clean freshwater (16–18°C / 60–64°F), sand substrate, low lighting.

• Diet: Carnivorous — enjoys earthworms, bloodworms, pellets, and frozen foods.

• Behavior: Prefers dim environments; their dark color makes them thrive in low-light aquariums.

💎 Why Choose an Onyx Axolotl

• Rare, gemstone-like beauty.

• Low maintenance yet visually stunning.

• Ideal for collectors who appreciate unique axolotl morphs.