How to Identify Red Gurnard

To identify Red Gurnard (Chelidonichthys cuculus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Predominantly bright red to reddish-pink on the dorsal surface, fading to a paler pink or white on the belly. The pectoral fins often have iridescent blue or green markings on the inner surface, sometimes with a dark spot.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Large, bony head with a steep profile and prominent ridges., Two separate dorsal fins., Three free, finger-like rays at the bottom of each pectoral fin, used for 'walking' and sensing prey., Large, fan-like pectoral fins., Relatively large eyes.

Dorsal fin

First dorsal fin with 9-10 spines; second dorsal fin with 17-18 soft rays. The first dorsal fin is typically shorter than the second.

Tail fin

Caudal fin is slightly emarginate (forked) to truncate.

Pectoral fin

Very large and fan-shaped, reaching beyond the origin of the anal fin. The three lowermost rays are detached and thickened, serving as sensory and locomotive organs.

Distinctive fins

Anal fin with 16-18 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Coloration

   Look for the distinctive bright red to reddish-pink body color, which is a primary identifier among gurnards.

2. 2

   Pectoral Fins

   Observe the large, fan-like pectoral fins. The inner surface often displays iridescent blue or green hues, sometimes with a dark spot, though this can vary.

3. 3

   Free Fin Rays

   Identify the three detached, finger-like rays at the base of each pectoral fin. These are used for locomotion and sensing.

4. 4

   Head Shape

   Note the large, bony, and armored head with a steep profile and prominent bony ridges and spines.

5. 5

   Dorsal Fins

   Two distinct dorsal fins, with the first being spiny and shorter than the soft-rayed second dorsal fin.

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