The American Flag Killifish (Jordanella floridae), or Florida Flagfish, is a stunning freshwater fish celebrated for its red, white, and blue coloration that resembles the American flag. This hardy species, native to Florida’s slow-moving waters, grows to a modest size of 2 to 2.5 inches, making it ideal for smaller aquariums. American Flag Killifish are versatile, thriving in a range of water conditions and environments, and even serve as natural algae controllers. They are peaceful yet can exhibit territorial behavior, so they do best in a well-planted tank with similar-sized, non-aggressive tank mates. With proper care, these vibrant fish can live for up to 3 to 5 years, offering both visual appeal and practical benefits to your aquarium.
Water Parameters for American Flag Killifish
Parameter
Preferred Range
Temperature
68°F – 82°F (20°C – 28°C)
pH Level
6.5 – 8.0
Water Hardness
Soft to Hard (5 – 20 dGH)
Tank Size
Minimum 10 gallons
Water Flow
Low to moderate