How to Identify Sardine

To identify Sardine (Sardinella spp.), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Typically silvery on the flanks and belly, with a darker, often bluish or greenish dorsal surface. Some species may have a series of small, dark spots along the flank.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Compressed body, fusiform shape., Large, easily shed cycloid scales., A single, short dorsal fin located mid-body., Forked caudal fin., Absence of a lateral line., Often possess a series of scutes (modified scales) along the ventral margin.

Dorsal fin

Single, short, located approximately mid-body, with 13-21 soft rays.

Tail fin

Deeply forked, homocercal, with two equally sized lobes.

Pectoral fin

Relatively small, positioned low on the body, with 12-18 soft rays.

Distinctive fins

Pelvic fins are small, abdominal, located beneath or slightly behind the dorsal fin origin. Anal fin is short, located posterior to the dorsal fin, with 12-23 soft rays.

Identification Tips

1. 1

   Body Shape

   Look for the elongated, somewhat compressed, silvery body typical of clupeids.

2. 2

   Scales

   Note the large, easily shed cycloid scales. Handling often results in scales coming off.

3. 3

   Dorsal Fin Position

   The single dorsal fin is usually located centrally on the back.

4. 4

   Ventral Scutes

   Feel for the series of sharp, bony scutes along the belly, a characteristic feature of many clupeids.

5. 5

   Coloration

   Silvery flanks and belly with a darker, often bluish or greenish back. Some species may have faint spots.

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