My Bestfriend gave me guppy fry!?

Question

my friend gave me 3 baby fancy guppies that i picked out myself they are about a month old or something around that anyways when i picked them out i wanted 3 females and i was sure i got 3 females

but when i got home and put them in the tank i noticed that one of the babies anal fin was starting to point and i believe that this is a sign the he is developing a gonopodium (male part) i don't want babies but i don't want to give him back to my friend because was trying to get rid of them and also he would probably die because of stress of moving back and forth to different tanks . what do i do?

Answer 1

get one of those fish tank dividers. the only other thing i can think of is get another tank for the male.

Answer 2

If you trade it back, then your friend is still getting rid of the same number of fish, so don't worry about it.

At that age there's no problem moving them as long as they are properly acclimated to the water each time.