How to Identify Atlantic Croaker

To identify Atlantic Croaker (Micropogonias undulatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Silvery-pinkish or brassy overall, with a darker back and a white belly. Oblique, wavy dark streaks or spots are present on the upper sides, extending onto the dorsal fin. Fins are typically dusky or yellowish.

Scale type

ctenoid

Mouth position

inferior

Distinctive features

Three to five pairs of small barbels (whiskers) on the chin, though often inconspicuous., A prominent, slightly inferior mouth., A deeply notched dorsal fin., Produces a distinct 'croaking' sound.

Dorsal fin

Two dorsal fins; the first is spiny (9-11 spines), and the second is long with one spine and 26-30 soft rays. A deep notch separates the two.

Tail fin

Slightly emarginate (shallowly forked) to truncate.

Pectoral fin

Moderately long, reaching beyond the tip of the pelvic fins.

Distinctive fins

Anal fin with 2 spines and 8-9 soft rays. Pelvic fins thoracic.

Identification Tips

1. 1

   Chin Barbels

   Look for 3-5 pairs of small, often inconspicuous, barbels on the underside of the chin. These are a key distinguishing feature from some similar species.

2. 2

   Body Coloration and Markings

   Note the silvery-pinkish or brassy body with distinctive oblique, wavy dark streaks or spots on the upper sides. The belly is typically white.

3. 3

   Dorsal Fin

   Observe the deeply notched dorsal fin, separating the spiny anterior portion from the longer, soft-rayed posterior portion.

4. 4

   Sound Production

   If handled or during spawning, listen for the characteristic 'croaking' or 'drumming' sound produced by the fish.

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