Hi
the best i can do is tell what i do or should i say did, when i had expectant gups
there are varied views on breeding traps and i used to use them but this time (i've set another tank for breeding,see pics below) i've decided to go for a more natural environment, providing good bottom cover and hiding holes/gaves for the fry to grow in, this increases your chances on holding on to them a bit longer if they a born in the tank when your not around
if you wish then catch the fry once born and then put into the safety of the trap to grow
i used to decrease the amount of light in the tank to induce birthing, just used to turn the light off during the day as natural light would be coming thru the window to give some light anyway, the fish used to settle down as if it was night time, found that this would de stress the situation for the fish and give the fry chance to hide before being eaten
what im trying to say is give your fry chance to hide, the likely hood that she has already given birth is high and the fry have been lost but remember that guppies store sperm and give birth again and again without the presence of a male
i know that its frustrating to see a fish that never gives birth theres nothing more exciting than seeing fry around your tank
i would'nt say that its the case you want to induce her its that you might feel that you want to help, thats what people do when they care.
every living thing on this earth will find somewhere that is comfortable to give birth so that is how you can help
i wish you luck with your fish and their fry (when they decide to arrive)
i dont know what your tank set up is but take a look at pics below to get an idea of what is good for a comfortable environment
i've added some live plants since this photo was taken to add even more coverage
the artificial grass like things are perfect for fry and these are placed in the front as you can see and also right the way round the edge of the back of the tank
another tip but not to do with the birthing issue but more after care, i know it sounds just a little thing but i have that it does work, add a diffuser to create fine bubbles this will distract the females from the fry to give yourself chance to find them as they love to play in the bubbles- found that distraction not only works for children but also guppies as well
