Tabby cat red cats and the patches of red on tortoiseshell cats will show tabby striping. The primary tabby pattern gene, "Mc/mc or Mc/Mc", sets the basic pattern of stripes that underlies the coat. "Mc" is the wild-type tabby gene and produces what is called a Mackerel Striped tabby. Classic tabbies are cats who also possess "mc/mc", a recessive mutant gene that produces the blotched pattern. The spotted gene is directly connected to the Mc gene; it 'breaks' the lines of a Mackerel tabby, turning it into spots. The spotted gene is dominant as well, which means a Spotted will be Sp/sp
Atlantic Spanish mackerel have one or more yellow stripes along the centerline. Young King mackerel have similar, but slightly smaller spots; these fade away on individuals weighing over , but they may still be seen as spots of slightly darker green on the upper back from some angles of view. Worldwide, there are many members of this genus quite similar to one or another of these three species. In particular, off Mexico, Atlantic Spanish mackerel may be confused with Serra Spanish mackerel "(Scomberomorus brasiliensis)" which may appear in the same area. Atlantic Spanish mackerel The Atlantic Spanish mackerel ("Scomberomorus maculatus") is a migratory