The Least Killifish is a viviparous fish that originated in the United States. With a size of about 3.5 cm, it is already suitable for tanks with a capacity of 54 liters or more. It likes to be kept in a group of at least 10 individuals and needs dense planting as well as shelter and hiding places such as roots, stone structures or caves to feel comfortable and safe. In a community tank, this peaceful fish can be kept very well together with peaceful fish of about the same size. In terms of water parameters, Heterandria formosa adapts very well to a wide range. The temperature of the water should be in the range of 16 - 20°C and the total hardness of the water between 10 and 20 dGH. This omnivorous little creature isn't too choosy when it comes to food either - it eats fine flake and powdered food as well as smaller live and frozen food.
These animals are...
[ ] ...bred by us
[X] ... bred by regional breeders (AT, DE)
[ ] ...bred by international breeders (import)
[ ] ...wild caught (import)
| Temperature |
16 - 26 °C |
| pH value |
6.5 - 8.0 |
| General hardness (GH) |
10 - 20 °dGH |
| Aquarium size |
> 54 liters (60 cm tank length) |
| Tank area |
Middle - top |
| Recommended quantity |
From 10 individuals |
| Scientific name |
Heterandria formosa |
| Common name |
Least Killifish |
| Origin |
USA |
| Size |
Up to approx. 3.5 cm |
| Shipping size |
Approx. 1 - 2 cm |
| Lifespan |
About 3 years |
| Feeding |
Small commercial fish food, life and frozen food |
| Socialization |
With other pieceful, small fish |
| Tank arrangement |
Dense planting and other hiding spots |
| Colouring |
Silvery grey, black, white |
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