Female Guppies Keep Dying

[Newbie101]

I have a tank with a dwarf blue gourami, 3 make guppies, 4 galaxy rasboras and every time I try introduce a female or two, they have all died around the 2 week mark.
Makes chase the females a lot but all other fish are fine. All wAter parameters are fine.
No signs of any disease. Just had one die this afternoon, who appears fine, just started swimming in the same place then nothing. The one remaining in the tank at the moment is bloated (first time there has been a visible sign of something wrong) she will eat way too much when feeding the tank, I've tried to offer her peas but that hasn't helped.
I think the other females I've had have died prior to birthing due to stress but I'm only guessing.. any ideas?

 

[seangee]

In order to assist members need the following info:

Tank size:
pH:
ammonia:
nitrite:
nitrate:
kH:
gH:
tank temp:

Fish Symptoms (include full description including lesion, color, location, fish behavior):

Volume and Frequency of water changes:

Chemical Additives or Media in your tank:

Tank inhabitants:

Recent additions to your tank (living or decoration):

Exposure to chemicals:

Digital photo (include if possible):

 

[AdoraBelle Dearheart]

In addition to the above info, how many females are you adding each time?