The difference between the to gar is that spotted gar have more broader and shorter shout than the florida gar. The florida gar have more longer and narrower than the spotted gar
For more info go to www.aquaticpredators.com the gar forums. By the way i am name Lepisosteus_oculatus in AP. And if you are lucky enough you can meet some gar experts like sol and brookalamprey.