Our Guide To Keeping Black Chin Livebearer Fish

1. About Fish Species:

   • Scientific name: Girardinus metallicus
   • Common name: Black Chin Livebearer
   • Family: Poeciliidae
   • Origin: Cuba
   • Adult length: Males around 3 to 4 cm, females around 5 to 7 cm
   • Lifespan: 3 to 5 years
   • Diet: Omnivore
   • Care Level: Easy
   • Temperament: Peaceful

2. Tank Setup:

   • Black Chin Livebearers are small, active fish that appreciate a well-planted aquarium with plenty of open swimming space. A minimum tank size of around 60L is recommended for a small group.
   • Provide dense areas of vegetation using plants such as Java Moss, Java Fern, Anubias and floating plants. Thick planting gives females and newly born fry places to shelter.
   • A secure aquarium lid is recommended because these active livebearers may occasionally jump, particularly when startled.

3. Water Parameters:

   • Black Chin Livebearers are adaptable but generally prefer neutral to moderately alkaline water with a pH range of approximately 7.0 to 8.0.
   • Keep the water temperature between 22 to 27°C (72 to 81°F).
   • They generally perform best in moderately hard water with stable water chemistry and good overall water quality.

4. Filtration and Water Flow:

   • Use efficient filtration with gentle to moderate water movement. Strong currents are unnecessary and may make it difficult for smaller individuals and fry to swim comfortably.
   • Regular partial water changes are important because Black Chin Livebearers benefit from clean, well-oxygenated water with low levels of dissolved waste.

5. Diet:

   • Black Chin Livebearers are omnivores and should be offered a varied diet consisting of high-quality small flakes, micro pellets and foods containing vegetable matter.
   • Supplement their staple diet with small live or frozen foods such as baby brine shrimp, daphnia, mosquito larvae and finely chopped bloodworms.
   • They will also graze on algae and microorganisms growing naturally on plants and aquarium surfaces.

6. Tank mates:

   • Black Chin Livebearers are peaceful fish and are best kept with other small, non-aggressive community species with similar water requirements.
   • Suitable tank mates can include peaceful livebearers, small rasboras, peaceful tetras, Corydoras and other similarly sized community fish.
   • Avoid large, aggressive or persistent fin-nipping species that may intimidate these relatively small livebearers.

7. Behavior and Compatibility:

   • Black Chin Livebearers are social, active fish and are best maintained in groups. Keeping several individuals allows them to display more natural social and courtship behaviour.
   • Males are smaller and typically develop the characteristic dark or black markings around the chin and underside of the body.
   • Because males frequently court females, it is advisable to keep more females than males where possible, helping to prevent individual females from receiving excessive attention.
   • Black Chin Livebearers give birth to live young rather than laying eggs. Dense planting significantly improves the chances of fry surviving in a community aquarium.