Endler’s livebearers are like guppies distilled to their brightest essence — smaller, even more vivid, and if anything hardier. These tiny, endlessly active fish are perfect for a nano tank, breed at a phenomenal rate, and put on a display of neon greens, oranges and blacks that few fish can match. This UK guide covers Endler’s livebearer care.

Here’s how to keep them.

Quick facts

• Adult size: males 2.5 cm, females 4 cm
• Tank size: 40 litres and up
• Water: pH 7.0–8.5, hard, 22–28 °C
• Lifespan: 2–3 years
• Temperament: peaceful, very active

Care and hard water

Endlers thrive in the hard, alkaline water most UK taps provide — no need to adjust it. Give them a planted nano tank with a gentle sponge filter and a small heater. They’re among the hardiest fish in the hobby, ideal for beginners.

Breeding and keeping strains pure

Like all livebearers, Endlers breed constantly — a mixed-sex group will quickly become a colony. Note that Endlers and guppies interbreed, so keep them separate if you want to preserve pure Endler strains. Feed small micro foods and powdered flake.

Tank mates

Ideal in a nano community with ember tetras, cherry shrimp, nerite snails and small rasboras. Avoid anything big enough to eat them.

Frequently asked questions

Are Endlers and guppies the same?

They are closely related and can interbreed, but they are different fish — Endlers are smaller and often more vividly coloured. Keep them apart if you want to preserve pure Endler strains.

What size tank do Endler's livebearers need?

A planted nano tank of around 40 litres or more suits a small colony. They are tiny and hardy but breed quickly, so extra space helps manage the growing population.

Are Endler's livebearers easy to keep?

Yes — they are among the hardiest fish in the hobby, thriving in the hard water most UK taps provide, making them ideal for beginners and nano tanks.

---

— Jaqline Smalling, FishForever