How to Identify Klunzinger Wrasse

To identify Klunzinger Wrasse (Thalassoma rueppellii), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Males are spectacularly colored with a green body, a prominent red or orange vertical band behind the pectoral fin, and blue-edged fins. The head is often marked with iridescent blue or green lines. Females and juveniles are typically duller, often greenish-brown with a series of dark spots or bars along the flanks, and may have a reddish caudal fin. The intensity of colors can vary with mood and reproductive state.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Prominent red/orange vertical band on males behind the pectoral fin., Iridescent blue/green lines on the head of males., Elongated body typical of Thalassoma species., Terminal mouth with small, conical teeth.

Dorsal fin

Single dorsal fin with 8 spines and 13 soft rays. The spinous and soft-rayed portions are continuous.

Tail fin

Truncate to slightly emarginate caudal fin, often with elongated outer rays in larger males.

Pectoral fin

Large and fan-like, used for propulsion.

Distinctive fins

Pelvic fins are relatively small. All fins are typically edged in blue or green in males.

Identification Tips

1. 1

   Coloration (Males)

   Look for the vibrant green body, the distinctive vertical red/orange band behind the pectoral fin, and the blue lines on the head. This combination is unique among wrasses in its range.

2. 2

   Coloration (Females/Juveniles)

   Females and juveniles are less colorful, often greenish-brown with dark spots or bars. The overall body shape and active swimming behavior are still indicative.

3. 3

   Geographic Range

   Its restricted distribution to the Red Sea and Gulf of Aden is a key identifier, differentiating it from similar-looking Thalassoma species found elsewhere.

4. 4

   Behavior

   Active, diurnal swimmers often seen foraging over reef structures. They are rarely shy and can be approached by divers.

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