These Molly fish are called Sailfin because their dorsal fin looks like a sail from a sailboat. These are perhaps the most popular of the Molly fish. The male Sailfin has 14 rays on their dorsal fin. Their distinctive fin and up turned mouth are pleasing to the average aquarium owner. Just like their cousin the Shortfin Molly fish, they too need slightly salty water to flourish.
The Sailfin Molly fish is much more sensitive than the regular Shortfin Molly fish in that they require a larger aquarium to swim around in. The male Sailfin Molly fish life expectancy are about one year and the female’s approximately 3 years.
Female Sailfin Molly fish are larger than her male counterpart and just like their cousins, they do not lay eggs. A female Sailfin Molly fish will give birth to 10 to 140 live young Molly fish, but not at the same time. She will commonly gestate throughout a period of a year, giving birth multiple times. Like with other Molly fish, she needs to be separated from the general population with a large birthing bin that has plenty of vegetation. She needs to be immediately removed away from the newborns when she is finished giving birth so they do not become her breakfast.