Guide

Molly fish care guide

Mollies are livebearers that do well in neutral to hard water.

⏱ 3 min read 🐠 Fish care 📅 Updated March 2026
Quick answer
  • 20+ gallons; neutral to hard water, warm.
  • Varied diet; they breed easily; peaceful with community fish.

Tank size and setup

At least 20 gallons for a small group. Heater (75–80 °F) and filter. They like plants and open space. Keep water parameters stable; neutral to slightly hard, pH around 7–8, works well.

Feeding and breeding

Omnivores: quality flake or pellet plus veg and occasional live/frozen. Do not overfeed. They breed readily; plan for fry or keep single-sex groups. Good tank mates: platies, guppies, tetras, corydoras. See community tank fish. Track with App-aquatic.

Keep learning

Stable aquariums come from consistent testing and patient stocking. Continue with our water parameters guide, how to cycle a tank, and combining fish safely. For logging and strip scans, see App-aquatic.

Log parameters, scan strips offline, and run stocking checks with App-aquatic.

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Tank size and setup?

At least 20 gallons for a small group. Heater (75–80 °F) and filter. They like plants and open space. Keep water parameters stable; neutral to slightly hard, pH around 7–8, works well.

Feeding and breeding?

Omnivores: quality flake or pellet plus veg and occasional live/frozen. Do not overfeed . They breed readily; plan for fry or keep single-sex groups. Good tank mates: platies , guppies , tetras, corydoras . See community tank fish . Track with App-aquatic .

How does regular testing help?

Regular testing lets you catch ammonia, nitrite, and nitrate shifts before fish show stress. Log results over time to see trends, not single snapshots.

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