Atractoscion atelodus, the small lunate caudal fin croaker, teraglin, Jew, teraglin-Jew, trag or trag-Jew, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers.

[3] Previously it was considered that this taxon was a synonym of A. aequidens which was thought to have a wide distribution in the southeastern Atlantic and Indo-West Pacific but in 2017 workers described two new species and resurrected A. atelodus from the western Pacific, restricting A. aequidens to the southwestern Indian Ocean.

[4] This species is classified in the family Sciaenidae which is placed within the suborder Sciaenoidei of the order Acanthuriformes in the 5th edition of Fishes of the World.

[5] The specific name atelodus means "imperfect teeth", an allusion to the lack of canines.

The colour of the body is iridescent blue and purple, frequently with diagonal black lines on the flanks.