How to Identify Spangled Emperor

To identify Spangled Emperor (Lethrinus nebulosus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Generally silvery-grey to olive-brown dorsally, fading to lighter ventral surfaces. Distinctive blue spots are scattered on the scales, particularly on the upper flanks. Fins are often yellowish or dusky. A reddish blotch may be present on the operculum (gill cover) in some individuals.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Blue spots on scales, especially on the upper body, Relatively deep body with a pointed snout, Large, thick lips, Can change color rapidly depending on environment or stress

Dorsal fin

Single dorsal fin with 10 spines and 9-10 soft rays. The spinous portion is continuous with the soft-rayed portion.

Tail fin

Moderately forked caudal fin with pointed lobes.

Pectoral fin

Long and pointed pectoral fins.

Distinctive fins

Pelvic fins are thoracic, located directly below the pectoral fins, with 1 spine and 5 soft rays. Anal fin has 3 spines and 8 soft rays.

Identification Tips

1. 1

   Body Coloration and Spots

   Look for the characteristic blue spots on the scales, particularly on the upper flanks. The overall body color can vary from silvery-grey to olive-brown.

2. 2

   Snout and Mouth

   Observe the pointed snout and relatively large, thick lips. The mouth is terminal.

3. 3

   Fin Shape

   Note the moderately forked caudal fin with pointed lobes and the long, pointed pectoral fins.

4. 4

   Size

   Adults can reach up to 80 cm (31 inches) in total length and weigh over 8 kg (17 lbs), though commonly caught specimens are smaller.

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