It is valid Sardinian or xarda . It is one of the common names of a fish that also receives the names mackerel, mackerel or xarda, is very similar to verdel. Its scientific name is Scomber scombrus and belongs to the family Scombridae . It is found in the Atlantic Ocean and the Mediterranean Sea. In Colombia we also say Sardinian to a kind of shark. It is also called lamia or bull shark. Its scientific name is Carcharhinus leucas and belongs to the family Carcharhinidae. It is characterized by adapting to fresh water, it goes back many rivers.