Gardneri Killifish

Gardneri Killifish (Fundulopanchax gardneri)

Gardneri Killifish, also known as Steel-blue Killifish are captivating freshwater fish known for their vibrant colors and striking patterns. Males display a mix of blue, yellow, and red with black spots, while females are less colorful but still show some blue hues.

Gardneri Killifish are a peaceful species that reach a size of about 2.5 inches. These fish do best in a small group with a ratio of 1 male to 2-3 females to reduce potential aggression. Due to their territorial nature, it is best to keep Gardneri Killifish in a species-only tank.

Community tanks of 40 gallons or more could include faster swimming fish such as Neon Tetra, Cardinal Tetra, and Lambchop Rasbora. It’s best to keep the other community in large schools so that their large numbers will confuse the Killifish. Avoid slow-moving and long-finned fish such as Guppies, Pencilfish, and Shrimp, which can be prone to constant nipping, especially if the Gardneri Killifish think they resemble prey.

Gardneri Killifish are carnivorous, and their diet consists of live and frozen foods such as brine shrimp, daphnia, and bloodworms. Supplementing with a high-quality flake or pellet food can help ensure they receive all the necessary nutrients.

They prefer a densely planted tank with hiding spots, including driftwood, caves, and rocks. Floating plants will also help to dim the light and make them feel more comfortable. Include low-light aquatic plants like Java Fern, Java Moss, or Anubias, and floating plants such as Water Sprite or Indian Fern.

The minimum aquarium size is 10 gallons, with an ideal community tank size of 40 gallons or more. Maintain a pH of 5.5-7.0, a hardness between 1-10 dGH, and a temperature range of 72-77°F (22-25°C).

A tight-fitting lid is necessary since they are known to be skilled jumpers.