How to Identify Pacific porgy

To identify Pacific porgy (Calamus brachysomus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Adults are typically silvery-gray to brownish-silver, often with iridescent reflections. They may have faint vertical bars or blotches, especially when stressed or in certain habitats. The fins are generally dusky or yellowish. Juveniles often exhibit more pronounced banding or spotting. A distinctive dark blotch may be present at the base of the pectoral fin.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, compressed body, Steep dorsal profile of the head, Large eyes, Small, protractile mouth with strong canine-like teeth in the front and molariform teeth in the back for crushing shells, Long pectoral fins, Often a dark blotch at the base of the pectoral fin

Dorsal fin

Single dorsal fin with 12-13 spines and 10-12 soft rays. The spiny portion is longer than the soft-rayed portion.

Tail fin

Moderately forked caudal fin.

Pectoral fin

Long and pointed pectoral fins, often extending beyond the origin of the anal fin.

Distinctive fins

Anal fin with 3 spines and 9-10 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Body Shape

   Look for a very deep, compressed body, characteristic of porgies.

2. 2

   Head Profile

   Note the steep, almost vertical profile of the head above the eyes.

3. 3

   Pectoral Fins

   Observe the long, pointed pectoral fins that often extend past the anal fin origin.

4. 4

   Mouth and Teeth

   Examine the small, protractile mouth with visible canine-like teeth at the front and molar-like teeth in the back, adapted for crushing prey.

5. 5

   Coloration

   Silvery-gray body, sometimes with faint bars, and a potential dark blotch at the pectoral fin base.

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