I gave away my cichlids and I upgraded my community tank from 29 gallon to 55. I have 5 Cory, 7 serpae tetras, 1 female guppy. The guppy is a rescue, pretty sure it was a feeder that didn't get eaten and the guy was trying to get rid of it by saying she was a baby bala shark lol. At the time she was so stressed she was completely grey but now she's got orange and yellow on her tail and is claiming to be part of the tretras, they've adopted her surprisingly. Tetras don't bother the Cory at all, guppy just hangs out with everybody, Cory are usually near the Driftwood or mating and plopping eggs all over the glass. I've got a variety of plants so I don't want diggers (partly why I gave my cichlids away, I couldn't build anything neat in the tank because they are expert landscapers lol) I was thinking of other tetras, black/white skirts. But I'm also looking for a center piece. Either a single or a pair of something. Oh, I'd like to add that I have a betta sorority, 4 girls. I considered adding them to the tank since they don't have long tails. And if that didn't work they can always go back to their old tank.