Endler Livebearer

General Information
Scientific Name Poecilia wingei
Minimum Water Size 10+ gallons (37.85+ liters)
Ease Of Care Easy
Average Lifespan 3 years
Temperament Peaceful
Approximate Adult Size 1 inch (2.54 centimeters)
Water Parameters 64-82 degrees Fahrenheit (17.77-27.78 degrees Celsius), 10-30 dH, 5.5-8.0 pH
Diet Omnivore
Native Region Venezuela

Overview

Originally found in Venezuela twice (the first discovery was not well written and in later years this fish was rediscovered by another person), it is often used when breeding guppies to give them the vibrant colors that they have. The most common trait that can be seen from true (or wild) endlers is the black bar that is at the upper portion of their body before the tail, which is where the name "Black Bar Endler" comes from. Due to the small size, it can be very hard to see this fish when it is placed with other bigger fish as they will hide from anything that can and will eat them.

Endlers in general are not classified to be schooling or shoaling fish, they do take great kindness towards others of their size if they are present in the same water. Due to their small size, these fish do not generally create a hierarchy and they can be seen roaming around their setup at almost all levels throughout the day. They will however stay away from any large fish, or a fish that has a mouth the same size or bigger than their own body. Commonly these fish are kept with fish the same size or bigger in order to remove some stress of the fish due to it's small size when being kept in a community setup.

Breeding

All endlers are classified as being livebearers, which means that they give birth to living fry compared to others which will release eggs into the water column. In order to tell genders, we can look at the anal fin of this fish. All males will have a tube like fin (called a gonopodium), where as the female will have a more round fin along with a pregnancy spot near this fin. It is to be noted however, that it can be almost impossible to tell the gender if the fish has not reached full maturity yet since these various signs will not be fully present or easy to tell apart. Due to their small size, it will be hard to spot them roaming around until they are at least a few weeks old if they are not held within a breeding net or fry only aquarium setup.

The male endler will mate with any given female endler or guppy within the same water, pregnant or not, and will release a type of sperm into the female. Shockingly, the female can hold a male's sperm for multiple months and is known to get pregnant, and release fry for up to 6 months without the help or addition of any males. The average gestation period for a female endler is anywhere between 22-28 days which is mostly dependent on the diet provided to the mother during the pregnancy. Once the fry have been released by the mother, there will be no parental care provided from either the father or mother. In most cases, the mother will eat the fry right after they have been born or shortly after.

Feeding

Endlers will gladly accept any form of flake, pellet, frozen and or freeze dried food, live foods, and also any wafers if present. In order to see the best coloration of any Endler, it is suggest that you give them a varied diet which is based around feeding them a plant based food (mostly what flakes are made of), and then slightly a meaty food such as pellets or live foods. During a female's pregnancy, algae will help with increasing numbers of fry being produced along with a more stable health throughout their first few months.