Mollies (also called Molly fish) are one of the most popular freshwater aquarium fish, especially for beginners. They are hardy, easy to care for, and come in many beautiful varieties. Here’s a detailed overview:
🐠 Overview of Molly Fish
- Scientific Name: Poecilia sphenops
- Family: Poeciliidae (same family as guppies and platies)
- Origin: Central & South America (freshwater streams, coastal brackish waters)
- Size: 3 – 5 inches (depending on variety)
- Lifespan: 3 – 5 years in captivity
- Temperament: Peaceful, community-friendly
🌈 Types of Mollies
There are many varieties due to selective breeding:
- Black Molly – Fully black, very common.
- Dalmatian Molly – White body with black spots.
- Balloon Molly – Round, balloon-shaped body.
- Sailfin Molly – Large dorsal fin, very attractive.
- Gold Dust Molly – Golden-yellow with black patches.
🏡 Tank Requirements
- Tank Size: Minimum 20 gallons (larger is better).
- Water Temperature: 24 – 28 °C (75 – 82 °F).
- pH Level: 7.5 – 8.5 (they prefer slightly alkaline water).
- Water Type: Freshwater, but can tolerate brackish water.
- Filtration: Good filtration and aeration required.
🍽 Diet
Mollies are omnivores:
- Flakes & pellets (high-quality).
- Vegetables (blanched spinach, cucumber, peas).
- Live/Frozen foods (brine shrimp, bloodworms, daphnia).
👶 Breeding
- Mollies are livebearers (they give birth to live young, not eggs).
- Gestation: ~4 weeks.
- One female can give birth to 20–100 fry at once.
- Fry should be separated, as adults may eat them.
✅ Care Tips
- Keep in groups (they are social).
- Avoid aggressive tankmates.
- Provide hiding spots (plants, decorations).
- Perform regular water changes (20–30% weekly).