Cat coat genetics as "transmembrane aminopeptidase Q" ("Taqpep"), which also produces the king cheetah coat variant. Spotted tabbies have their stripes broken up into spots, which may be arranged vertically or horizontally. A 2010 study suggests that spotted is caused by the modification of mackerel stripes, and may cause varying phenotypes such as "broken mackerel" tabbies via multiple loci. The "Ticked" gene, "T / t", produces an "Abyssinian ticked" or non-patterned agouti tabby with the dominant allele, having virtually no stripes or bars. Stripes usually remain to some extent on the face, tail, legs, and sometimes the chest. The dominant ticked tabby allele
Chilean jack mackerel for Pacific jack mackerel. The Chilean jack mackerel looks very much like the greenback horse mackerel "(Trachurus declivis)" found around Australia and New Zealand. The two species can be distinguished by the number of gill rakers ("T. declivis" 50–57, "T. murphyi" 51–65) and the number of scales and scutes in the lateral line ("T. declivis" 81–82, "T. murphyi" 89–113). All three species are found schooling around the coast of New Zealand. They are mainly captured using purse seine nets, and are managed as though they were one species or stock. Chilean jack mackerel The Chilean jack mackerel ("Trachurus murphyi") sometimes