Sailfin Molly
Poecilia latipinna
Sailfin Molly (Poecilia latipinna) — Easy care, Semi-aggressive, under Livebearer & Killifish. Minimum tank in the app: 24 US gal min; aim for 70–79°F and pH 6.8–8.2. Sailfin Mollies are a vibrant choice for those seeking dynamic top and mid-level swimmers in a community tank.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Americas / Africa (varies)
- Africa
- South America
- Central America & Mexico
Regional colours match the stocking calculator’s origin map.
Sailfin Molly Tank Setup
Create a balanced environment with open swimming areas complemented by plants and decorations for cover. A sandy or fine substrate allows for natural foraging behavior, while moderate lighting encourages plant growth without overwhelming the fish. Ensure adequate water flow to mimic their natural habitat, promoting health and vitality.
What Do Sailfin Mollys Eat?
As omnivores, Sailfin Mollies adapt well to varied diets, but they may compete for food if not adequately fed. They thrive on high-quality flakes or pellets supplemented with vegetables.
Sailfin Molly Tank Mates
Ideal companions include similarly sized, peaceful species like Guppies or Platies, which share similar water requirements. Avoid aggressive or overly territorial fish, as they can stress Mollies, particularly during mating seasons. Within their group, maintain a ratio that includes several females per male to mitigate aggression and promote a harmonious atmosphere.
Are Sailfin Mollys Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. One frequent error is underestimating their need for group dynamics; keeping fewer than six can lead to stress and aggression. failing to maintain stable water parameters can lead to health issues, as they are sensitive to drastic changes in pH and temperature.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




