细鳞圆鲹，又称颌圆鲹、拉洋圆鲹，俗名为红赤尾，为辐鳍鱼纲鲈形目鲈亚目鲹科的其中一个种。

本鱼广泛分布于全球各大洋暖水域。

The mackerel scad, Decapterus macarellus, is a species of fish of the family, Carangidae. While mackerel scad can be considered gamefish, they are usually used as bait. They are popular eating fish in the Hawaiian islands, where they are called `opelu.