I would like to get a figure 8 puffer for my brackish tank but ive heard they've got nasty tempers. i saw them at my lfs the other day and they were with a bunch of tetras and other fish and the puffer seemed to itolerate them just fine. is it possible to keep them with any other fish at all, or was it just a lethargic fish? right now i just have a 5-6" dragon goby in a 20 gal at roughly 1.005 sg. i was originally going to add some mollies in with the goby, but id think a puffer would be much more interesting, but i do not want it to pick on my dg. is it a good investment or should i fish for bumblebees instead?