Least Killifish Pair (Heterandria formosa)
One of the smallest livebearing fish in the world, the Least Killifish (Heterandria formosa) is a peaceful, fascinating species perfect for natural planted aquariums. Despite the name, these are not true killifish but tiny livebearers that constantly forage among plants, leaf litter, and microfauna.
Their calm temperament and small size make them ideal for nano aquariums and established ecosystems where they can breed naturally and display their unique behaviors.
Includes
✔ 1 Male & 1 Female Pair
✔ Healthy, tank-raised fish
✔ Perfect for planted nano and community aquariums
Care
- Adult Size: 0.8–1.2 inches
- Temperature: 68–80°F
- Temperament: Peaceful
- Diet: Omnivore
- Tank Size: 5 gallons or larger
🌿 Father Fish Tip: Least Killifish thrive in heavily planted aquariums with abundant floating plants, leaf litter, and live microfauna. In a mature natural ecosystem, they often reproduce on their own, creating a thriving self-sustaining colony.
🚚 Shipping Information
We ship all live fish using UPS 2nd Day Air to ensure safe and healthy delivery.
📅 Shipping Days: Monday–Wednesday only
This prevents delays and avoids weekend holds.
ORDERS OF FISH MAY BE DELAYED SHIPPING UP TO A WEEK TO INSURE ADEQUATE ACCLIMATION
🔒 Live Arrival Guarantee
We stand behind our fish. If your fish arrive dead on arrival (DOA), contact us with clear photos in the unopened bag and we will make it right.
