What could this mean? They are in a 45 gallon, with six females, that are all giving birth i believe, at least three of them are, the Ammonia is 0-.10, nI 0, nA 0-10. There is also a small BN pleco and a small RN pleco.
They didnt do this in the ten gallon QT they were in, but it isnt always chasing, though sometimes, they do swim in a line, though it doesnt seem fast enough to be a chase. Ive seen guppy chases, and this isnt it. They hang out together, push the females out of the way, but mostly, its them, swimming around, as if they are in a pack!
What could this be?