It happened, no reason not to believe them.
That's very exciting! Do you know genders?
I have guppies and its basically the same species. I keep the at about 73 degrees Fahrenheit. You can turn up the tank 2 or 3 degrees for faster growth, but it leads to a shorter life. They will breed very fast and very soon, so you will need a larger tank. You can feed them flakes easily. I give my fish a variety of food, good quality of flakes, freeze dried blood worms added in the mix, and frog pellets, I had some African dwarf frogs, but they were almost five years old so yeah... The pellets are really small so they won't choke, the float to the bottom and it give something my fish to scavenge for.