Sailfin mollies re wonderful addition to planted tank as they graze algae off plants and not too small. But I had to grow them out to size before introduction to avoid predation. I used to regard live bearers cichlid food until I keep plants. They do well in my tank as I set it up with dolomite substrate for hard water cichlid. I like the wild type over line bred hybrids that resemble pearl gourami with silvery body and gold throat..The plants look great. I really like those sailfin mollies too.
Here is a video of a big male displaying.