Hi,
Scientific name:Priapella intermedia
Described by:Alvarez & Carranza, 1952
Family:Poeciliidae
Size:Male: 5.0 cm, Female: 7.0 cm
Origin:Mexico
Temperature:24 °C - 28 °C
pH:7.0 to 8.0
Hardness:9 °d GH - 20 °d GH
Deportment:Surface & Middle
Life expectancy:5 years
Behaviour:This species is particularly sensitive to the variations in temperature. It will like a densely planted. It is a gregarious and peaceful fish.
Reproduction:Every 4 to 6 weeks the females produce a score of young fry of approximately 10mm.
Dimorphism:The male has a gonopode and is smaller than the female.
I hope this was of some help to you. It has been translated from a French webpage and they are indeed livebearers.
Regards
BigC