Join Date: May 2011
Location: Elk Grove, California
If you mean the guppy in the very first pic, that is a male for sure. Usually, although not always, female guppies are very plain with gray or clear bodies and colored fins. My guess is you have al males but examine them very closely. The differences in male and female guppies are pretty easy to spot once you know what to look for, according to Izzy's diagram.