Umbrina ronchus, the fusca drum, slender baardman, roncador, fusca croaker or slender tasselfish, is a species of croaker or drum from the family Sciaenidae which is found in the western Atlantic Ocean and the Mediterranean Sea.

The small mouth is positioned inferiorly and contains the villiform teeth which are typical of the genus Umbrina and it has a short stiff barbell on its chin which has a pore on its tip.

[2] Umbrina ronchus is found in inshore waters off sandy beaches and sheltering among rocks, from 20 to 200 m depth.

[1] Umbrina ronchus is of minor commercial importance[1] and is normally sold fresh.

The researchers concluded that the South African specimens represented a different taxon, and they suggested resurrecting Umbrina robinsoni as the name for this taxon as the form occurring off South Africa and in the western Indian Ocean.