Gabon Killifish Care Guide
Aphyosemion gabunense · Freshwater Fish
What Gabon Killifish look like
The Gabon Killifish (Aphyosemion gabunense) exhibits a small, elongated, and laterally compressed body, typically reaching a maximum adult size of around 2-3 inches (5-8 cm). Males are characterized by their striking iridescent blue-green coloration, adorned with vibrant red spots and intricate patterns, while females display a more subdued, plain brown coloration, indicative of sexual dimorphism. The fins of males are particularly ornate, exhibiting vivid red and yellow markings that enhance their visual appeal during courtship displays. This species possesses a well-defined lateral line system, which aids in detecting vibrations in the water, and features a small, terminal mouth equipped with fine, needle-like teeth, adapted for capturing small invertebrates. Additionally, the Gabon Killifish has a pronounced adipose fin, contributing to its streamlined morphology, which is advantageous for navigating the densely vegetated habitats of its native forest streams.
Behavior & temperament
Aphyosemion gabunense is primarily a solitary or loosely social species, often found in small groups within its natural habitat, which consists of shallow, densely vegetated forest streams. They tend to occupy the mid to upper levels of the water column, where they can dart among aquatic plants. Breeding behavior is characterized by egg scattering, with females laying adhesive eggs among the vegetation, which provides cover for the developing embryos. The Gabon Killifish exhibits a generally peaceful temperament; however, males can display territorial aggression during breeding seasons, particularly when competing for the attention of females. Their behavior is influenced by the presence of cover, which they utilize for both foraging and breeding.
Diet & feeding
In the wild, the Gabon Killifish is a carnivore, primarily feeding on small invertebrates such as mosquito larvae, daphnia, and other zooplankton. In captivity, they require a diet rich in protein, including high-quality flake food, live or frozen foods such as brine shrimp and bloodworms to ensure optimal health and coloration.
Behind the name
Aphyosemion (from Greek 'aphyo' meaning 'to breathe' and 'semeion' meaning 'sign' or 'mark'); gabunense (referring to its origin in Gabon).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Gabon Killifish?
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