I am thinking those two, and I would like to have the pleco in there as well. I like to have some sort of algae eater in all of my tanks, and I have found the more aggressive fish don't bother the pleco as much as other softer algae eaters. I once bought a chinese algae eater and seconds after entering the tank, I saw its tail hanging out of the jack's mouth, a nice $4 meal for the guy. Thoughts on the three fish in the tank, the 55g looks pretty, but the ammonia has yet to spike. I looked at 'stability' to help things along, good idea?