if you have very pretty colors males and snails were very many, also had, rivulus puntactus, and fewer hoplias malabaricus, Aphyocharax paraguayensis, Gymnocorymbus ternetzi, Aphyocharax anisitsi, Callichthys Callischthyswow some of those apisto have a really nice blue color to them! seem to have lots of really nice snails also.
It is only a potential problem with very small fry. I've grown it a couple of times, but it always dwindles away in the summer. I've still got U. gibba, which isn't to every-ones taste, but it is more tolerant of warm conditions and often flowers.I'll have to pull my tank already