How to Identify Five-lined cardinalfish

To identify Five-lined cardinalfish (Cheilodipterus quinquelineatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is typically silvery-white to pale grey, adorned with five prominent dark brown to black longitudinal stripes running from the snout to the caudal fin base. The fins are generally translucent, sometimes with a yellowish tint. A distinct black spot is often present at the base of the caudal fin.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Five dark longitudinal stripes on a pale body., Large eyes, indicative of nocturnal habits., Two separate dorsal fins., Relatively large mouth with small, sharp teeth.

Dorsal fin

Two separate dorsal fins; the first dorsal fin has 6-8 spines, and the second dorsal fin has 1 spine and 9-10 soft rays.

Tail fin

Forked caudal fin.

Pectoral fin

Pectoral fins are moderately sized, with 13-15 rays.

Distinctive fins

Pelvic fins are thoracic, located beneath the pectoral fins, with 1 spine and 5 soft rays. Anal fin has 2 spines and 8-9 soft rays.

Identification Tips

1. 1

   Stripes

   Count the five distinct dark longitudinal stripes running along the body. This is the most reliable identifying feature.

2. 2

   Caudal Spot

   Look for a prominent black spot at the base of the caudal fin, which is often present.

3. 3

   Body Shape

   Observe the elongated body shape, typical of cardinalfishes, and the relatively large eyes.

4. 4

   Nocturnal Behavior

   If observed during the day, they will likely be hidden. At night, they are more active and visible.

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