How to Identify Redthroat Emperor

To identify Redthroat Emperor (Parma microlepis), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Overall body color is typically silvery-grey to brownish-grey, often with a reddish or yellowish tinge, particularly on the fins. The most distinctive feature is the bright red or orange coloration on the inside of the mouth and gill covers, which gives it its common name. Juveniles may have faint vertical bars. Fins are often reddish or yellowish. Some individuals may display irregular dark blotches or spots on the flanks.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Bright red or orange coloration inside the mouth and on the operculum (gill cover) margins., Elongated snout with a slightly pointed profile., Large, prominent eyes., Robust, slightly compressed body., Often has a dark blotch on the upper side of the body, below the lateral line, though this can be indistinct.

Dorsal fin

Single dorsal fin with 10 spines and 9-10 soft rays. The spinous portion is longer than 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. Anal fin has 3 spines and 8 soft rays.

Identification Tips

1. 1

   Mouth and Gill Cover Coloration

   The most reliable identifier is the vivid red or orange color inside the mouth and on the inner margins of the gill covers. This is usually visible when the fish is caught or handled.

2. 2

   Body Shape and Snout

   Look for an elongated, robust body and a relatively long, pointed snout. This distinguishes it from some other Lethrinus species with blunter snouts.

3. 3

   Fin Coloration

   The fins, particularly the caudal and pectoral fins, often have a reddish or yellowish hue, which can be a good indicator.

4. 4

   Lateral Line

   Observe the lateral line, which is complete and runs smoothly along the body. The scales above and below the lateral line can also be counted for more precise identification, though this requires closer examination.

Explore Redthroat Emperor