Tag: Blue-Spotted Grouper (Cephalopholis cyanostigma)

The Blue-Spotted Grouper (Cephalopholis cyanostigma) is one of the smaller, more reclusive species of Grouper found in local waters.

Growing to around 30cm in length it is fairly easy to identify with its overall brown/redish colouration with darker "mottled" patches on the head and body. The patches on the flank may become almost joined in places to form uneven vertical bars.

The most distinctive characteristic of the species, albeit one shared with a number of its relatives (and leading to much confusion during identification), are the small, dark-edged blue spots covering the body.

Although similar in size to many of its locally occurring relatives, the Blue-Spotted Grouper is generally more difficult to observe, often dashing for cover amongst rocks or corals when approached.

Due to this reclusive nature, it is difficult to determine how common, or otherwise, the species may be.

It likely occurs at most of the shallow reef areas such as those found around Koh Phangan, Koh Tao and Angthong Marine park, although its presence at the deeper offshore sites such as Sail Rock could be considered sporadic at best.

The Blue-Spotted Grouper (Cephalopholis cyanostigma) is one of the smaller, more reclusive species of Grouper found in local waters.

Growing to around 30cm in length it is fairly easy to identify with its overall brown/redish colouration with darker "mottled" patches on the head and body. The patches on the flank may become almost joined in places to form uneven vertical bars.

The most distinctive characteristic of the species, albeit one shared with a number of its relatives (and leading to much confusion during identification), are the small, dark-edged blue spots covering the body.

Although similar in size to many of its locally occurring relatives, the Blue-Spotted Grouper is generally more difficult to observe, often dashing for cover amongst rocks or corals when approached.

Due to this reclusive nature, it is difficult to determine how common, or otherwise, the species may be.

It likely occurs at most of the shallow reef areas such as those found around Koh Phangan, Koh Tao and Angthong Marine park, although its presence at the deeper offshore sites such as Sail Rock could be considered sporadic at best.

Alan's picture
Blue-Spotted Grouper (Cephalopholis Cyanostigma)

A Blue-Spotted Grouper (Cephalopholis Cyanostigma) rests on the sand at Angthong Marine park.