1. are "spotted gars" the same as "florida gars"?
-they are different fish, but require identicle care
2. how big do gator gars get in captivity?
-i have heard that gator gar are capable of reaching 4-5 feet in captivity(from a reputable source).
3. how big do spotted gars get in captivity?
-from my experience and from others i have seen they are capable of reaching 18" easily with the potential to reach 24".
4. are gars compatible with asian arowanas (rtg's)?
-that all depends on the individual fish, but i would think you should be fine with asian aros.
Note: gator gar do NOT do well with tankmates.