How to Identify Pinfish

To identify Pinfish (Lagodon rhomboides), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery body with 5-7 vertical, dark bars that are often indistinct. A prominent, oval-shaped black spot is located on the shoulder, just behind the operculum. Fins are typically yellowish, and the caudal fin is often forked. Juveniles may exhibit more pronounced barring and a yellowish tint.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Prominent black spot on the shoulder, Sharp, stiff dorsal fin spines, Small, incisor-like teeth in the front of the jaws, with molar-like teeth further back, Forked caudal fin

Dorsal fin

Single dorsal fin with 12-13 strong, sharp spines followed by 10-12 soft rays. The spiny portion is much longer than the soft-rayed portion.

Tail fin

Moderately forked caudal fin.

Pectoral fin

Long, pointed pectoral fins.

Distinctive fins

Anal fin has 3 spines and 10-11 soft rays. Pelvic fins are thoracic, with 1 spine and 5 soft rays.

Identification Tips

1. 1

   Shoulder Spot

   Look for a distinct, dark, oval-shaped spot on the side of the body, just behind the gill cover. This is the most reliable identifying feature.

2. 2

   Dorsal Spines

   Observe the dorsal fin, which has very sharp, stiff spines. These are a key characteristic and the origin of its common name.

3. 3

   Body Shape and Color

   Note the compressed, silvery body, often with faint vertical bars. The fins may have a yellowish tint.

4. 4

   Mouth and Teeth

   If possible, examine the mouth. Pinfish have small, incisor-like teeth at the front and molar-like teeth further back, adapted for their omnivorous diet.

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