A zone or band; a layer.
"The local angler proudly displayed his catch of zona, a rare red-tailed silverside found only in the waters off Madagascar."
A species of silverside fish (Atheriniformes), Bedotia geayi, from Madagascar, also called red-tailed silverside.
A surname.
"The new neighbor, Mr. Zona, waved hello as he walked his dog past our house."