The Rocket Killifish (Epiplatys annulatus), also known as the Clown Killifish, is a striking nano fish famous for its rocket-shaped tail marked with bold red, blue, and black stripes. Growing only about 1.5 inches, they are peaceful surface dwellers best kept in groups of 6 or more in nano to medium aquariums. They thrive in heavily planted tanks with floating plants that provide shade and cover, as they can be shy and easily stressed in open setups. A gentle filter and calm water conditions suit them best, as strong currents may overwhelm their small size. They prefer soft, slightly acidic to neutral water and a varied diet of micro-pellets, flakes, frozen, and live foods such as baby brine shrimp and daphnia. With proper care, Rocket Killifish are a hardy, eye-catching addition to peaceful community aquariums.
| Care Aspect | Details |
|---|---|
| Scientific Name | Epiplatys annulatus |
| Common Name | Rocket Killifish / Clown Killifish |
| Family | Nothobranchiidae |
| Origin | West Africa |
| Size | 1–1.5 inches (2.5–4 cm) |
| Lifespan | 3–5 years |
| Temperament | Peaceful, shy, schooling |
| Minimum Tank Size | 10 gallons (40 liters) |
| School Size | 6+ individuals |
| Water Temperature | 72–79°F (22–26°C) |
| pH | 6.0–7.5 |
| Hardness | 2–12 dGH |
| Diet | Micro-pellets, flakes, frozen, live micro-foods |
| Tank Setup | Heavily planted, floating plants, gentle flow |
| Compatibility | Peaceful nano fish, shrimp-safe, avoid fin-nippers |

