p. diffusa X endler

95%
Endlers and P. diffusa should have no problem being kept together. Endlers tend to be too small to be kept with others, but thankfully the P. diffusa doesn't harm any other animals. For tank parameters, it's recommended to keep a temperature in a 78-80F range. Since the snail's shell can "melt" in pH under 7.0 ppm, both of these animals should be keep at a stable pH in the 7.0-8.0 ppm range. For a minimum tank size to keep both together, a beginner can keep them in a 10g standard.
http://seriouslyfish.com/species/poecilia-wingei/