How to Identify White Croaker

To identify White Croaker (Genyonemus lineatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Silvery overall, with a darker, iridescent bluish-gray to greenish-gray dorsal surface and a white to silvery belly. Fins are typically dusky or yellowish. Faint, wavy, oblique lines may be present on the sides, especially in younger individuals.

Scale type

ctenoid

Mouth position

subterminal

Distinctive features

Single, short, stout barbel on the chin, often difficult to see without close inspection., Large mouth, slightly inferior, with small, conical teeth., Lateral line is prominent and arched anteriorly., Preopercle (bone before the gill cover) is smooth, without spines.

Dorsal fin

Two dorsal fins, deeply notched. The first dorsal fin has 10-11 spines; the second dorsal fin has 1 spine and 20-24 soft rays.

Tail fin

Slightly emarginate (forked) to truncate caudal fin.

Pectoral fin

Pectoral fins are moderately long, reaching beyond the tip of the pelvic fins.

Distinctive fins

Pelvic fins are thoracic, located below the pectoral fins. Anal fin has 2 spines and 11-13 soft rays.

Identification Tips

1. 1

   Chin Barbel

   Look for a single, short, and stout barbel on the underside of the chin. This is a key distinguishing feature, though it can be small.

2. 2

   Mouth Position

   The mouth is slightly inferior (underslung), indicating its bottom-feeding habits.

3. 3

   Coloration

   The overall silvery body with a darker back and white belly, sometimes with faint wavy lines on the sides, is characteristic.

4. 4

   Preopercle

   The smooth preopercle (no spines) helps differentiate it from some other croaker species.

Explore White Croaker