Also known as Cigarfish, Cigar Minnow, Dotted Scad, Helena Scad, Mackerel Scad, Pollock, Robin, Round Robin, Round Scad Cigarfish, Scad, Scad Cigarfish, Summer Stonebass.
Found in schools close to the bottom over sandy beaches as well as off-shore waters.
They feed on crustaceans, invertebrates and molluscs.
Length - 30cm
Depth - 0-100m
Widespread Eastern Atlantic, Western Atlantic, Caribbean
Jacks are fast swimming fish that can roam over great distances. The larger fish hunt other fish and the smaller fish eat zooplankton. In turn they are hunted by large Tuna and Dolphins. Ref: https://www.fishbase.se/summary/994