Rainbow runner chasing a mackerel scad school

A school of mackerel scads, or Opelus off Hawaii

On a recent swim, I was turning to head for home when I saw this large school of fish rocketing towards me. As they zipped by I snapped the top photo. I could see they were mackerel scads, known in Hawaii as Opelu.

The reason for their haste also became clear as the last of them went by. The bottom photo shows a rainbow runner hot on their tails. Both fish are members of the jack family, but it’s a family that doesn’t get along. Mackerel scads are a favorite food of rainbow runners.

In a matter of moments, the fish disappeared out of sight. These were the only two photos I was able to take of the episode and I was thrilled that both turned out pretty well.

A school of mackerel scads, or Opelus being hunted by a rainbow runner off Hawaii

4 thoughts on “Rainbow runner chasing a mackerel scad school

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