How to Identify Axolotl

To identify Axolotl (Ambystoma mexicanum), look at these key features.

Physical Characteristics

Body shape

eel-like

Coloration

Wild-type axolotls are typically dark brown or black with olive or grey mottling. Captive-bred individuals exhibit a wide range of color morphs, including leucistic (pinkish-white with black eyes), albino (white/yellow with red eyes), golden albino, and melanoid (all black).

Scale type

none

Mouth position

terminal

Distinctive features

Prominent feathery external gills, typically three on each side of the head, used for respiration., A dorsal fin that extends from the back of the head to the tail., A broad, flattened head with small, lidless eyes., A wide mouth with small, vestigial teeth., Four short, stout limbs, each with four digits on the front feet and five on the hind feet.

Dorsal fin

A continuous fin fold extending from behind the head to the base of the tail.

Tail fin

Laterally compressed and paddle-like, continuous with the dorsal and ventral fin folds.

Pectoral fin

Small and paddle-like, located behind the gills.

Distinctive fins

The prominent dorsal and ventral fin folds are characteristic of their aquatic lifestyle.

Identification Tips

1. 1

   External Gills

   The most striking feature are the three pairs of feathery external gills on either side of the head, which are typically red or pink due to blood flow. These are retained throughout their life.

2. 2

   Body Shape

   They have a robust, elongated body, reaching lengths of 15-45 cm (6-18 inches), though typically around 23 cm (9 inches). The head is broad and flat.

3. 3

   Dorsal Fin

   A prominent fin runs along the entire length of their back, from behind the head to the tail, and continues along the ventral side of the tail.

4. 4

   Limb Structure

   They possess four short, sturdy limbs. The front limbs have four digits, and the hind limbs have five digits.

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