Can I add the baby guppies to my tank?

They are about this big ------------- ( Including tail )

They are in a breeder box at the moment, there is 3 of them. ( Its about 1 gallon )

In the 16 gallon, I have : 1 baby apple snail, 2 male guppies ( Black all over ) ( Gold snake skinned ) and one female guppy. ( tri colour ) and one white crown tail male betta. They have been doing fine for over a month now since I rescued the guppies. The mom gave birth on the 3rd of March, now its the 13th. They are about half an inch... This morning one escaped while I was cleaning the tank out... None of my large fish in the 55 gallon tried to eat it but the Glow light Tetras, white cloud Mountain minnows and some neon's... Not even my Kissing gouami, moonlight gouami or glass catfish tired to eat her but they damn right saw her. They tetras was to slow for them to catch her but she looked much to big to be eaten.