How to Identify Caribbean Spiny Lobster

To identify Caribbean Spiny Lobster (Panulirus argus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Variable, typically reddish-brown to greenish-brown, often mottled with yellow, orange, or white spots and blotches. The carapace is covered in numerous sharp spines. The walking legs are often striped or banded.

Scale type

none

Mouth position

inferior

Distinctive features

Lack of large claws (chelae), Two very long, thick, spiny antennae, often longer than the body, Two smaller, slender antennules, Carapace covered in numerous forward-pointing spines, Prominent supraorbital spines (horns) above the eyes, Tail fan (telson and uropods) is broad and powerful, used for rapid backward escape, Five pairs of walking legs

Dorsal fin

N/A (crustacean)

Tail fin

Broad, fan-like tail (telson and uropods) used for propulsion

Pectoral fin

N/A (crustacean)

Distinctive fins

No true fins; locomotion is via walking legs and tail fan.

Identification Tips

1. 1

   Absence of large claws

   The most distinguishing feature from true lobsters; spiny lobsters have only small, slender claws on their walking legs, not large crushing claws.

2. 2

   Long, spiny antennae

   Their antennae are typically longer than their body and covered in prominent spines, used for defense and sensory perception.

3. 3

   Spiny carapace

   The entire body, especially the carapace, is covered in numerous sharp, forward-pointing spines.

4. 4

   Coloration and patterns

   Look for the reddish-brown to greenish-brown body with distinctive yellow, orange, or white spots and blotches.

5. 5

   Supraorbital spines

   Two prominent 'horns' or spines are located above the eyes.

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