I'm not aware of a "Spikey Flathead" as a species of Flathead (NOTE- not saying there isn't) but, I like others on the thread call small Flathead, Spikeys. And this is more prevalent with the Ocean species,(Sand, Tiger, Marbled) rather than say, Duskys in a Estuary situation.
Many years ago a fellow I knew who really was into Fish ID and had credentials to go with it, always insisted on a Latin name to identify a fish because of common names cause confusion.
Happy for someone to put up a Latin name for a "Spikey" Flathead as that would be interesting.
Happy Sunday and watch those waves on the coast. Stay safe.