you believe in wikipedia? you know I can just go and write whatever I want in there?https://en.wikipedia.org/wiki/Spotted_gar says Spotted occur in small part of FL The spotted gar is native to North America and its current range is from southern Ontario to the west from the Nueces River in Texas east to the northern coast of the Gulf of Mexico and southeast to the lower Apalachicola River in Florida.
But, Hung, you appear right. MFK and other sites (for example this was useful to me http://www.oscarfishlover.com/forum/74-gars/265468-spotted-or-florida-gar-what-s-the-difference ) state the 2/3rd thing is useless with aquarium gars.
Solomon and Richard had said many time that the range of Florida gar and Spotted gar do not touch. Any gar look like a spotted from Florida is Florida gar. And that information come from actual data from their researches.