i have a 240 gallon tank 8'x2'x2' with 1 8 inch silver aro, 1 8 inch florida gar, 1 5 inch flagtail, 1 8inch lima shovelnose cat, 3 bichirs 4-8 inches. i want to get some new tankmates but i dont know what to get. was thinking about getting an aba aba, my lfs has one 2", would it survive in my tank and how fast does it grow. will it be agressive at all?