Hello, I am new to aquariums and fishkeeping, and I have a 40 gallon tank, with 4 neon tetras, 2 zebra danios, 2 sunburst platy's, 2 guppies, 1 albino catfish, 1 algae eater, 2 bumblebee fish, and 1 Krib. I was hoping to get a few more fish to complete my tank. I have been trying to do some research on some good fish to get, but I cant decide. I kind of want a centerpiece fish, but from what I've read, thats kind of hard to do in a tropical community tank. Anyone have any suggestions that will make my tank more complete?