Hello. So I decided to buy a 1ft florida gar online and I plan on throwing him in my 150gal tank with my other fish. I'm a little worried he maybe too big. The biggest (longest) fish in my tank is my reed fish at 9in. Besides that my smallest fish is my Bicher at 4in. In the middle I have my Arowana at 7in and oscar at 5in. What do u guys think? Let me know thanks