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Molly Fish Aquarium Care Guide

Poecilia latipinna/ Poecilia sphenops

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Keeping Molly Fish in an aquarium requires the right conditions.

Aquarium Information

  • Care level: beginner
  • Temperament: peaceful
  • Diet: omnivore
  • Minimum tank size: 20 gallons (for a small group)
  • Compatibility: Generally compatible with other peaceful, similarly sized community fish. Avoid fin-nippers or overly aggressive species. Good tankmates include other livebearers, tetras, rasboras, and corydoras.
  • Special requirements: Mollies thrive in well-planted aquariums with open swimming spaces. They appreciate the addition of aquarium salt (1-2 teaspoons per gallon) in freshwater setups, especially P. latipinna, as it mimics their natural brackish habitats and can help prevent diseases. Regular water changes are crucial for their health. They are livebearers, meaning they give birth to live fry, so be prepared for rapid reproduction if males and females are kept together.

Water parameters

Temperature
72-82°F (22-28°C)
pH level
7.0-8.5
Hardness
10-25 dGH

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