How to Identify Graysby

To identify Graysby (Cephalopholis cruentata), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Highly variable, typically reddish-brown to olive-brown, covered with numerous small, dark red to reddish-brown spots. These spots often extend onto the fins. It can rapidly change its color intensity and pattern to blend with its surroundings. Often displays 4-5 white spots along the dorsal midline, which can appear or disappear.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Numerous small, dark red to reddish-brown spots covering the entire body and fins., Often displays 4-5 distinct white spots along the dorsal midline, which can be prominent or absent depending on mood and environment., Relatively large eyes., Slightly pointed snout.

Dorsal fin

Single dorsal fin with 9 spines and 14-16 soft rays. The spiny and soft-rayed portions are continuous.

Tail fin

Rounded caudal fin.

Pectoral fin

Large, rounded pectoral fins.

Distinctive fins

Pelvic fins are relatively short and located beneath the pectoral fins. Anal fin has 3 spines and 8-9 soft rays.

Identification Tips

1. 1

   Coloration and Spotting

   Look for the characteristic reddish-brown to olive-brown body covered in numerous small, dark red spots. These spots are a key identifier.

2. 2

   Dorsal White Spots

   Observe the dorsal midline for 4-5 distinct white spots, which can be a strong indicator, though they are not always visible.

3. 3

   Fin Shape

   Note the rounded caudal fin and the continuous dorsal fin with both spiny and soft-rayed portions.

4. 4

   Size

   Graysby are relatively small groupers, rarely exceeding 30 cm in length.

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