Etrumeus teres (DeKay, 1842) Etrumeus sadina, the red-eye round herring, is a species of fish belonging to the family Dussumieriidae, a family notable for their rounded bellies.

Its anal and pelvic fins are small, and its scales are large and thin.

Its side and underside are silvery in color, and its back is a murky green.

Round herrings are found in the northwestern Atlantic Ocean, from the Bay of Fundy to Florida and the Gulf of Mexico.

[2] It can be found inshore during the summer in the northern sections of its occurring range, but in the southern half of its range, it is found further from the shore at around 50 to 150 m depth.