How to Identify Pacific Cod

To identify Pacific Cod (Gadus macrocephalus), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Dorsal side is typically mottled brown, gray, or olive-green, fading to a lighter, often whitish, belly. Irregular spots or blotches may be present on the sides and back, providing camouflage against the seabed.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Three distinct dorsal fins, Two distinct anal fins, Prominent barbel on the chin, typically longer than the eye diameter, Large head (macrocephalus means 'large head'), Lateral line is pale and continuous, curving upwards over the pectoral fin

Dorsal fin

Three separate dorsal fins; the first is triangular, the second and third are progressively longer and lower.

Tail fin

Truncate to slightly emarginate (straight to slightly indented).

Pectoral fin

Relatively large and rounded.

Distinctive fins

Pelvic fins are small and located anterior to the pectoral fins (jugular position).

Identification Tips

1. 1

   Dorsal Fins

   Count three distinct dorsal fins. This immediately distinguishes it from many other fish species.

2. 2

   Anal Fins

   Observe two distinct anal fins.

3. 3

   Chin Barbel

   Look for a prominent barbel on the chin. In Pacific Cod, this barbel is typically longer than the diameter of the eye.

4. 4

   Coloration and Pattern

   Note the mottled brown/gray/olive coloration with irregular spots or blotches on the back and sides, providing camouflage.

5. 5

   Lateral Line

   The lateral line is pale and continuous, with a distinct upward curve above the pectoral fin.

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