Before you put fish into your tank it needs to be cycled. Here are some good articles for you to read. Hope you enjoy them.
http://www.fishlore.com/Forum/freshw...-beginners.0.h
Endlers livebearers are great. First bit of information you have to remember is DO NOT put them with guppys because they will interbreed. I don't believe Endlers are not being gathered in the wild anymore because their habitat is being destroyed. As for stocking you are better off stocking them in trios (1 male/2 females) if you have a choice. if one on one the male tends to harasse the female.
My Endlers are in a Ph of 7.2-7.4 but can handle just about anything if acclimated slowly. Temp is also very flexible.
www.endlersrus.com is a website devoted exclusively to them. great info as well as some really nice pictures are there. Welcome to FishLore!
Carol