Steel Blue Lyretail Killifish Care Guide
Fundulopanchax gardneri · Freshwater Fish
What Steel Blue Lyretail Killifish look like
The Steel Blue Lyretail Killifish (Fundulopanchax gardneri) exhibits a fusiform body shape, reaching a maximum adult size of approximately 3 inches (7.5 cm). Males are particularly striking, characterized by their steel blue coloration adorned with vibrant red-orange spots and markings, which serve as a visual cue during mating displays. The caudal fin is notably elongated and can form a lyretail shape, enhancing its aesthetic appeal. The dorsal and anal fins are also vividly colored, showcasing a combination of blue and red hues. This species possesses a lateral line system, which aids in detecting water movements, and its dentition is adapted for a carnivorous diet, featuring small, sharp teeth. Defensive adaptations include rapid swimming capabilities and the ability to utilize dense vegetation for cover in their natural habitat.
Behavior & temperament
Fundulopanchax gardneri is a social species that typically exhibits a hierarchical structure within its groups, often found in small schools in the wild. They inhabit the upper to mid-water column, preferring densely vegetated areas where they can find refuge. Breeding behavior is characterized by egg scattering, with females laying eggs among aquatic plants, which are then fertilized by males. The species is generally peaceful but can display territorial aggression, particularly during breeding periods, making it essential to provide ample space and hiding spots in captivity to mitigate conflicts.
Diet & feeding
In the wild, the Steel Blue Lyretail Killifish is a carnivore, primarily feeding on small invertebrates and zooplankton. In captivity, it requires a diet rich in high-quality flake food, live or frozen foods such as brine shrimp and daphnia to maintain optimal health and coloration.
Behind the name
Fundulopanchax (from Latin 'fundulus' meaning 'small bottom' and Greek 'panchax' meaning 'all') and gardneri (named in honor of the British naturalist, William Gardner).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
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