What distinct visual characteristic differentiates small, juvenile Yellowtail Snappers from mature adults?

Answer

Small specimens have a distinct, dark lateral stripe running along their side

The appearance of the Yellowtail Snapper undergoes a noticeable transition as it matures. Juvenile fish are characterized by the presence of a prominent dark lateral stripe, often appearing black, running down the side against the silvery body background. This highly conspicuous marking serves as a critical identification marker for small catches. As the fish grows larger and approaches adulthood, this black line gradually diminishes and disappears, leaving behind the faint, characteristic yellow stripe associated with the mature coloration pattern.

What distinct visual characteristic differentiates small, juvenile Yellowtail Snappers from mature adults?
appearancesnapperfishcharacteristicYellowtail Snapper