Morphology
- Size: 8 cm. to 18 cm.
- Color: silvery on the sides darkening to bluish grey on the back, and lightening to almost white on the underside.
- Shape: The slender rainbow sardine has an elongated body, with round belly and a pointed nose. The single dorsal (back) fin is slightly behind midpoint. The tail fin is heavily forked. The scales are very delicate and are easily detached. Like other sardines it has no lateral line, and no scales on the head.
The slender rainbow sardine is primarily differentiated from the rainbow sardine, because the slender rainbow sardines do not have tiny radiating striae on the posterior part of their scales. There is some indication that the slender rainbow sardine may tend to have more vertebra than the rainbow sardine.
Read more about this topic: Slender Rainbow Sardine
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