How to Identify Ornate Wrasse

To identify Ornate Wrasse (Thalassoma ornatum), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Males are typically more brightly colored, featuring a green to blue-green body with prominent orange to reddish-orange stripes or markings along the flanks. The head often has intricate blue and orange patterns. Females and juveniles are generally less vibrant, often with a greenish-brown body and less distinct markings. The caudal fin can be lunate or slightly emarginate, often with colored margins.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Elongated body with pointed snout, Terminal mouth with small, conical teeth, Bright, intricate color patterns, especially in males, Continuous dorsal fin, Lunate or slightly emarginate caudal fin

Dorsal fin

Single, continuous dorsal fin with 8 spines and 13 soft rays. The spinous portion is typically lower than the soft-rayed portion.

Tail fin

Lunate to slightly emarginate, often with extended lobes in larger males.

Pectoral fin

Large and fan-like, used for propulsion.

Distinctive fins

Pelvic fins are small and located ventrally, just behind the pectoral fins.

Identification Tips

1. 1

   Coloration and Pattern

   Look for the distinctive green/blue-green body with prominent orange/reddish stripes or markings, especially on the flanks and head. Males are more vibrant.

2. 2

   Body Shape

   Its elongated, torpedo-like body is characteristic of the genus Thalassoma.

3. 3

   Fin Shape

   The lunate or slightly emarginate caudal fin, often with colored margins, is a good identifier.

4. 4

   Behavior

   Observe its active, darting swimming style and its tendency to burrow into the sand at night or when startled.

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