Clown killifish
The clown killifish, or rocket killifish, is a tiny fish in the family Nothobranchiidae, native to coastal freshwaters of West Africa. It has a striking pattern of dark and cream vertical bands along the body and a colorful red-and-blue tail resembling a rocket flame, brightest in males. It is a peaceful, surface-oriented fish that is best kept in a small group and prefers the upper layer of calm water, where it hangs beneath floating plants waiting for prey. It thrives in a well-planted aquarium with plenty of floating cover, soft acidic water, gentle or no current, and a tight lid, since it can jump. Its small upturned mouth needs tiny foods such as micro-worms, baby brine shrimp, and small frozen items. It is a plant-spawner that lays eggs among fine vegetation, and the fry can be raised on the tiniest live foods.
Water parameters
| Temperature | 22 – 26 °C |
|---|---|
| pH | 5 – 7 |
| Carbonate hardness (KH) | 0 – 4 °dKH |
| General hardness (GH) | 1 – 8 °dGH |
Tank & stocking
| Minimum tank volume | 40 L |
|---|---|
| Volume budget per individual | 2 L — adds up with tank-mates |
| Minimum group size | 8 individuals (shoaling) |
“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.
Frequently asked questions
What size aquarium does Clown killifish need?
Provide at least 40 litres for a small group to keep Clown killifish in good conditions.
What water parameters does Clown killifish need?
A temperature of 22–26 °C, pH 5–7.
Is Clown killifish peaceful or aggressive?
Its temperament is peaceful.
What does Clown killifish eat?
Its diet: carnivore.
How many Clown killifish should be kept together?
It is a social species: keep a group of at least 8.
How big does Clown killifish get?
Around 3.5 cm as an adult.
Is Clown killifish suitable for beginners?
Care level: intermediate.
Planning a tank with Clown killifish?
AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.
Fish from the same biotope
Report an error on this page
Care data is community-assisted. Spotted something wrong? Let us know — it won't change the page instantly, but it goes to moderation.
Care data is generated and manually reviewed; always cross-check before major decisions. ← Back to the encyclopedia