Stella is our Mackerel Tabby. I never heard that description before. Good to know.
A mackerel tabby has narrow stripes that run in parallel down its sides. This is what some people refer to as a “tiger cat.” The body has narrow stripes running down the sides in a vertical pattern.
Ideally the stripes are non-broken lines; evenly spaced. They branch out from one stripe that runs along the top of the cat’s back down the spine, resembling fish skeleton — which is why the term “mackerel” is used to describe it. According to Catster