Endler Care Guide
Endlers are tiny, dazzling livebearers that pack an incredible amount of color into a fish barely an inch long. Hardy, peaceful, and endlessly active, they are a perfect choice for nano aquariums and planted tanks where their jewel-like males really shine. If you love guppies but want something a little more refined and energetic, an endler is a wonderful pick. Browse our colorful selection in the beginner fish collection, including the striking El Tigre Endler and the shimmering Blue Star Endler.
Meet the Endler
Endlers (Poecilia wingei) are close relatives of the guppy, originally from Venezuela. Males stay tiny, around 1 inch, and wear bold patterns of orange, green, black, and metallic blue, while females are larger and plainer. They are active, peaceful, and live around 2 to 3 years. Popular types we stock include the Black Bar, Yellow Jacket Tiger, Leopard, and Yellow Tux endlers. Like other livebearers such as platies and swordtails, they are beginner-friendly and breed readily.
Tank Size and Setup
Because endlers are so small, a group thrives in a 10 gallon tank, and even a well-planted 5 gallon can house a small colony. A rimless nano aquarium or any tank from our glass aquariums collection makes a great home. Endlers love densely planted tanks with open swimming space at the front. Add plenty of live plants and some floating plants, which give fry cover and make the adults feel secure. Use a gentle filter, since their tiny fry can be pulled into strong intakes.
Water Parameters and Heating
Endlers are adaptable but, like most livebearers, prefer slightly hard, neutral to alkaline water. Aim for a temperature of 72 to 80°F, a pH of 7.0 to 8.0, and moderately hard water. A small adjustable heater keeps temperatures stable. Always treat tap water with a quality dechlorinator before water changes and keep a test kit handy to monitor ammonia, nitrite, and nitrate. Make sure the tank is fully cycled before adding fish. Regular small water changes and basic tank maintenance keep endlers colorful and healthy.
Feeding Your Endler
Endlers are easy-going omnivores with tiny mouths, so they need appropriately small foods. Crushed flakes and micro-pellets make a fine daily staple, and they relish small frozen foods like baby brine shrimp and daphnia. A varied diet from our fish food collection brings out their best color. They also graze on algae and biofilm in a planted tank. Feed small amounts once or twice a day, only what they finish quickly, to keep the water clean.
Tankmates
Endlers are perfect community fish for a peaceful nano setup. They mix well with guppies (though see the breeding note below), small tetras, snails, and dwarf shrimp, since they are far too small to bother shrimp. Avoid larger or fin-nipping fish that may eat or harass them. For more small-tank ideas, see our guide to freshwater fish that stay small and the best nano fish for planted tanks.
Breeding Endlers
Endlers are prolific livebearers, and a mixed group will produce fry constantly with no effort on your part. Females give birth to live young every few weeks, and the fry are large enough to survive in a planted tank. One important honesty note: endlers and guppies readily interbreed, producing hybrid fry. If you want to preserve pure endler lines, keep them in a species-only tank away from guppies. If you do not want a population boom at all, simply keep a male-only group, which also gives you the most color.
Is an Endler Right for You?
Endlers are an excellent choice if you want a small, hardy, brilliantly colored fish for a nano or planted community tank, and they are very forgiving for beginners. The main things to plan for are their fast breeding and their tendency to hybridize with guppies. For more easy starter species, explore our best beginner fish collection and related guides like the molly care guide.
Frequently Asked Questions
How many endlers should I keep? Keep a group of at least six. They are social and look their best in numbers, and a male-only group avoids constant breeding.
Can endlers and guppies live together? Yes, they are compatible, but they will interbreed. Keep them separate if you want pure endler or guppy offspring.
Do endlers need a heater? In most homes, yes. They do best at a stable 72 to 80°F, so a small adjustable heater is recommended.