ok, so im getting a 180 gallon tank in a couple weeks. I have a 4 inch spotted gar, four 2-4 inch frontosas, a 2 inch dat, and a 5 inch Senegal bichir all in a 55 gallon. they are all doing great and get along awesome so aggression isn't a factor in size... would a 180 gallon be ok for all these fish long term? it would be 6x2x2