Hi, I have a ten gallon tank that currently houses 5 neon tetras, 3 serpae tetras, 1 dalmation molly, and 1 sunburst platy. I wasn't planning on getting this many fish, but i was forced to increase the school size for the neons. I know the serpaes are known to be aggressive, but i have had no problem with mine. Just wondering if I am overstocked? I do a 20-30% change weekly. If needed, i can move the neons to a separate aquarium, or give some to my sister. Thanks!