The animals first called Crocodile gars where actually hybrids of Shortnosed gar (L. platostomus) and Alligator gars and not Florida/spotted..A very few Platyrhincus/oculatus X Atractosteus spatula hybrids where though produced of which only one is actually known of and alive today. (Ask E_americanus for details has he owns it)
Croc gars where only produced in two year classes and none are known past this. Size is totally unknown but the largest documented from first year class fish (2003) is about 26 inches and is currently housed at shedds aquarium in Chicago.
Croc gars are thee rarest gar type there is and are just not seen anymore.