How to Identify Red-eye round herring

To identify Red-eye round herring (Etrumeus teres), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface is typically dark blue to greenish-blue, fading to silvery sides and a white belly. A distinct reddish tint is often visible in the eye, especially when fresh, giving it its common name.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Large eyes, often with a reddish tint., Cylindrical body, less compressed than many other herring species., Absence of a distinct lateral line., Small, deciduous scales., A single, short dorsal fin located mid-body.

Dorsal fin

Single, short dorsal fin with 17-21 soft rays, originating slightly anterior to the midpoint of the body.

Tail fin

Deeply forked caudal fin.

Pectoral fin

Small, located low on the body, with 14-17 soft rays.

Distinctive fins

Pelvic fins are small, located abdominally, with 8-9 soft rays. Anal fin is short, located far back on the body, with 10-13 soft rays.

Identification Tips

1. 1

   Body Shape

   Look for a distinctly cylindrical, round body, unlike the more compressed bodies of many other herring and sardine species.

2. 2

   Eye Color

   The large eye often has a noticeable reddish hue, especially in live or very fresh specimens.

3. 3

   Dorsal Fin Position

   The single dorsal fin is situated roughly in the middle of the back, not far forward or backward.

4. 4

   Scales

   The scales are relatively small and easily detached.

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