How Many Axolotl Species Are There?
The Surprising Truth About the Mexican Walking Fish
Description: Are you wondering how many axolotl species exist? Discover the
difference between the wild species and the various morphs found in captivity
in this complete guide.
Introduction
The Axolotl (Ambystoma mexicanum) has captured the hearts of
exotic pet enthusiasts and scientists alike. With their smiling faces and
incredible regenerative abilities, they are truly one of nature’s wonders. But
a common question arises among beginners and experts: How many axolotl
species are there? To answer this, we must look at the scientific
classification of these unique amphibians and distinguish between a
“species” and a “morph.” In this guide, we will dive deep
into the world of axolotls, their origins, and their fascinating variations.
Understanding the Scientific
Classification
Technically and scientifically, there is only one species of
axolotl: the Ambystoma mexicanum.
While people often see different colors like pink, gold, or black and
think they are different species, these are actually “morphs”
(genetic variations) within the same single species. The axolotl belongs to the
genus Ambystoma, which includes many other types of tiger salamanders.
However, the Ambystoma mexicanum is unique because it is
“neotenic,” meaning it retains its gills and stays aquatic throughout
its entire life.
The Distinction: Species vs. Morphs
When people ask “how many axolotl species are there,” they are
usually confused by the wide variety of colors available in pet stores. It is
essential to understand the difference:
- Species: A biological
group that can interbreed. (Only 1: Ambystoma mexicanum). - Morphs: Genetic
mutations that affect color and patterns. There are over 20 different
morphs recognized in the pet trade today.
The Wild Axolotl: The Original Species
In the wild, the Ambystoma mexicanum only exists in the Lake
Xochimilco complex near Mexico City. The “wild type” axolotl is not
the pink creature we often see in photos.
- Color: Mottled dark
brown, green, and black. - Purpose: This coloring
provides perfect camouflage in the muddy waters of the Mexican canals. - Status: Sadly, the
wild species is critically endangered due to pollution and invasive
species.
Popular Axolotl Morphs (The
“Colors” People Confuse with Species)
If there is only one species, why do they look so different? Breeders
have isolated specific genes to create stunning variations. Here are the most
common ones:
1. Leucistic Axolotl (The Pink One)
This is the most famous variety. They have translucent white/pink skin
and bright red or pink gills. They are often mistaken for albino axolotls, but
they have dark eyes.
2. White Albino
Similar to the Leucistic, but they lack all pigment, including in their
eyes. Their eyes are clear or red, and they are very sensitive to bright light.
3. Golden Albino
These are stunning creatures that look like they are made of gold. They
have yellow-gold skin and reflective spots (iridophores).
4. Melanoid
The “Goth” of the axolotl world. They are completely black or
dark blue-gray with no reflective pigments.
5. Rare Morphs: Chimeras and Enigmas
- Chimera: A rare
occurrence where two embryos fuse, resulting in an axolotl that is split
down the middle with two different colors. - Enigma: A very rare,
darkly pigmented morph with greenish-gold patches.
Why Is the Axolotl Species Unique?
Beyond the question of “how many axolotl species are there,” we
must address why the Ambystoma mexicanum is scientifically significant.
- Neoteny: Unlike other
salamanders, they never “grow up” and move to land. - Regeneration: They can
regrow limbs, heart tissue, and even parts of their brain without
scarring. This is why they are studied extensively in medical labs.
Conservation Status: Protecting the
Only Species
While there are millions of axolotls in labs and homes worldwide, the
true wild species is on the brink of extinction. Recent surveys suggest there
may be fewer than 1,000 individuals left in their natural habitat. When
we talk about how many axolotl species exist, we must remember that if the Ambystoma
mexicanum goes extinct in the wild, we lose a vital piece of evolutionary
history.
Summary Table: Species Facts at a
Glance
|
Feature |
Description |
|
Scientific Name |
Ambystoma |
|
Common Name |
Axolotl / Mexican |
|
Number of Species |
One (1) |
|
Number of Morphs |
20+ |
|
Natural Habitat |
Lake Xochimilco, |
|
Conservation |
Critically |
Frequently Asked Questions (FAQ)
Q: Are there any other species similar to axolotls?
A: Yes, the Anderson’s Salamander (Ambystoma andersoni) is
very similar and also neotenic, but it is a distinct species found in a different
lake in Mexico.
Q: Can different axolotl morphs live together?
A: Yes! Since they are all the same species (Ambystoma mexicanum),
different colors can live in the same tank as long as they are the same size.
Q: Why are they called “Mexican Walking Fish”?
A: It’s a nickname. They aren’t fish; they are amphibians with legs that
allow them to “walk” along the bottom of the lake.
Conclusion
In summary, while you may see dozens of different colors and patterns,
the answer to “how many axolotl species are there” is
scientifically simple: there is only one species, the Ambystoma
mexicanum. However, the diversity within this single species is vast,
thanks to genetics and dedicated breeding.
Whether you own a pink Leucistic or a dark Melanoid, you are caring for a
unique creature that is a true miracle of the natural world. Let’s work
together to keep the interest in axolotls alive and support conservation
efforts for the wild species in Mexico.