How to Identify Sand Seatrout

To identify Sand Seatrout (Cynoscion arenarius), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface is typically silvery-gray to greenish-gray, fading to bright silver on the sides and white on the belly. Fins are generally dusky or yellowish. Lacks distinct spots or bars on the body.

Scale type

ctenoid

Mouth position

superior

Distinctive features

Two prominent canine-like teeth at the tip of the upper jaw, characteristic of the genus Cynoscion., A relatively small, slender body compared to other Cynoscion species., Absence of spots on the body and fins (distinguishing feature from Spotted Seatrout)., Lateral line is slightly arched anteriorly and then straight to the caudal fin.

Dorsal fin

Two dorsal fins; the first is spiny (8-11 spines), and the second is soft-rayed (1 spine, 25-29 soft rays). The two fins are separated by a distinct notch.

Tail fin

Caudal fin is typically truncate to slightly emarginate.

Pectoral fin

Pectoral fins are relatively short, not reaching the anus.

Distinctive fins

Anal fin has 2 spines and 10-12 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Body Coloration

   Look for a uniform silvery body without any distinct spots or markings. The back is grayish-green, fading to silver on the sides and white on the belly.

2. 2

   Teeth

   Examine the upper jaw for two prominent, sharp canine-like teeth at the front. This is a key characteristic of the Cynoscion genus.

3. 3

   Dorsal Fins

   Note the two distinct dorsal fins, separated by a notch. The first is spiny, and the second is soft-rayed.

4. 4

   Size and Shape

   Sand Seatrout are generally smaller and more slender than Spotted Seatrout. They rarely exceed 50 cm (20 inches) in length.

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