55 gallon just like mine. I was in the same spot the past month and just last week finally got my puffer. You have a few choices.
-Monotrete Abei (what I got, active hunter, cool coloring, neat little guy)
-Hairy puffer
-Palembang puffer (was another of my choices but its lazy and not very active)
-Salivators (smaller, rare, can have a group with just one mail if heavily planted tank with lots of hiding room is given)
I think I may be missing a couple options.
-Monotrete Abei (what I got, active hunter, cool coloring, neat little guy)
-Hairy puffer
-Palembang puffer (was another of my choices but its lazy and not very active)
-Salivators (smaller, rare, can have a group with just one mail if heavily planted tank with lots of hiding room is given)
I think I may be missing a couple options.