Tiger Endler Breeding Guide

Breeding the Tiger Endler (Poecilia wingei), a tiny barred livebearer, with notes on sexing, brood frequency, fry care and keeping the line pure from guppy crosses.

Overview

The Tiger Endler is a strain of Poecilia wingei (family Poeciliidae) named for bold tiger-like vertical bars on the male. Endler's livebearer is a small ovoviviparous fish that gives birth to live young roughly every 23 days. It is closely related to the guppy (Poecilia reticulata) but is smaller and kept as a distinct line.

Sexing

Males are small and brightly marked, developing colour at roughly 3-4 weeks of age, with full richness building over the first six months. Females are plainer and can reach about twice the size of males. Mature males carry a gonopodium for internal fertilisation.

Conditioning

As an omnivore the Tiger Endler conditions well on small foods: fine flake, micro live or frozen foods, and grazing on algae and microorganisms found on plants. Keep stable, slightly hard alkaline water for steady reproduction.

Breeding Setup

Endlers breed continuously in mixed-sex groups, so no special setup is needed. To preserve strain purity it is critical to keep them away from guppies: Endlers (P. wingei) cross readily with guppies (P. reticulata) and the hybrids are fertile, which dilutes the gene pool. A densely planted tank both shelters fry and supplies grazing food.

Mating & Gestation

Males fertilise females internally via the gonopodium, and females give birth to live young approximately every 23 days.

Birth & Fry Care

Broods range from 1 to about 30 fry, depending on the mother's age and size. Newborn fry spend their first hours consuming their yolk sac on the bottom and are most vulnerable to predation then, including from the mother and other females; males show less cannibalism. Suitable foods include powdered fry food, baby brine shrimp, crushed flake, algae and microorganisms on plants.

Common Challenges

Large births can stress females, sometimes leading to grey colouration, deterioration and death. The main threat to a strain is accidental hybridisation with guppies, which produces fertile crosses and erodes Endler purity, so dedicated species-only tanks are recommended.