So I have basically fallen in love with these fish, from what I have read they have great personality and they are just so cute... I'm conflicted however on a few care needs and exactly which one would be best with my set up's... I currently have 2 empty tanks the first is a 5.5 gallon which from what I have read would be suitable for one dwarf is this correct? The second is a 15 gallon which some sites have said is suitable for one figure 8 is this information also correct? I am aware that the figure 8 needs salinity but is that and the size of them the main differences? From the information I found that seams to be the biggest differences in care needs... also the info I read seamed to say that if the tank is big enough you can have multiples of each, (not together of course) I always thought that puffers absolutely had to be alone no exceptions but do they really enjoy the company of their own kind in a large enough setup? Another thing do they bite? I mean I know they have teeth since they eat snails but when you do a water change do you have to be extra careful so they don't draw blood? Any info you could give me is much appreciated, I really want to know as much about these cute little fish as possible to give one a good life.