1) Commercial fish 2) Fish genus 3) Genus gadus 
Gadus is a genus of demersal fish in the family Gadidae, commonly known as cod, although there are additional cod species in other genera.The best known member of the genus is the Atlantic cod. Until recently, three species in the genus were recognized. Modern taxonomy also includes a fourth one, the Alaska pollock (Gadus (=Theragra) chalcogrammus...
fish genus of the family Gadidae, including the individuals and groups known as bib, cod, pollock, and whiting (qq.v.).
[n] - type genus of the Gadidae: the typical codfishes
genus Gadus noun type genus of the Gadidae: the typical codfishes