1. Tank Size: Mollies and guppies are active swimmers, so they require enough space to move comfortably. A tank of at least 20 gallons is recommended to accommodate a group of mollies and guppies.
2. Water Parameters: Mollies prefer slightly alkaline water with a pH level between 7.5 and 8.5, while guppies are more adaptable and can tolerate a pH range of 6.8 to 7.8. Aim for a neutral pH of around 7.0 to 7.5 to suit both species. Water hardness should be moderate (100-200 ppm) for mollies, but guppies can adapt to a wider range. Maintain regular water changes to ensure good water quality.
3. Temperature: Mollies prefer warmer water temperatures between 75-82°F (24-28°C), while fancy guppies are comfortable in temperatures ranging from 72-82°F (22-28°C). Find a temperature that falls within these ranges to accommodate both species.
4. Temperament: Mollies and guppies are both peaceful and social fish. However, male guppies can sometimes be territorial towards each other, especially during mating displays. Provide sufficient hiding places and visual barriers within the tank to minimize aggression.
5. Feeding: Mollies and guppies are omnivores and enjoy a varied diet. Offer them a mix of high-quality flake food, pellets, and live or frozen foods such as brine shrimp, daphnia, or bloodworms. Be mindful not to overfeed, as this can lead to water quality issues.
6. Compatibility with Other Tank Mates: Mollies and fancy guppies can cohabitate with other peaceful community fish species of similar size and temperament. Good options include platy, swordtails, tetras, and corydoras catfish. Avoid housing them with larger, aggressive fish that may prey on them.
By carefully considering these factors and creating a suitable environment, mollies and fancy guppies can coexist harmoniously and thrive together in a beautiful community aquarium.