The bib is a member of the Cod family and has relatively large and deep body. The upper jaw is longer then the lower one which has the distinctive chin barbell.  It has three dorsal fins, the first of which is triangular in shape and two anal fins. Adult fish are coppery colour with three or four light vertical bands. Adult fish can grow to 40cm in length although most are between 20-30cm.

Bib are usually encountered in small or large shoals around rocky areas adjacent to sand or near wrecks. The wreck of the Clifton outside Cork Harbour is nearly always patrolled by bib. Bib is widespread all around the coast of Ireland.