How to Identify Baldchin Groper

To identify Baldchin Groper (Choerodon rubescens), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Adults typically exhibit a reddish-brown to purplish-brown body, often with lighter ventral surfaces. The most distinctive feature is the pale, often whitish or bluish-white, 'bald' patch on the top of the head, extending from between the eyes to the nape. Fins are generally reddish-brown, sometimes with blue margins. Juveniles are typically paler, often with mottled patterns.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Prominent 'bald' patch on the top of the head, typically white or pale blue., Large, powerful canine-like teeth at the front of both jaws, with molariform teeth posteriorly., Thick, fleshy lips., Robust body shape.

Dorsal fin

Single dorsal fin with 12 spines and 10 soft rays. The spinous portion is longer than the soft-rayed portion.

Tail fin

Caudal fin is truncate to slightly rounded.

Pectoral fin

Large and rounded.

Distinctive fins

Pelvic fins are relatively small. All fins are generally robust.

Identification Tips

1. 1

   Head coloration

   The most reliable identifier is the distinct pale (white to bluish-white) 'bald' patch on the top of the head, contrasting with the darker body coloration.

2. 2

   Body shape and size

   A large, robust wrasse, reaching up to 90 cm (35 inches) in length and weighing over 10 kg (22 lbs). Its deep body and powerful appearance are characteristic.

3. 3

   Dentition

   If visible, the prominent canine teeth at the front of the jaws are a key feature of the genus Choerodon.

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