My Swordtail gave birth 3 days ago to her 3rd batch of fry. This time she does not seem to be recovering as well as the other times her color is blotchy, she is quite skittish and doesn't seem to have much of an appetite. I moved her away from her babies after she gave birth(about 35) in with my guppies and mollies. The tank had readimgs of 0 ammonia 0 nitrite and ph 7.4 I don't have a nitrate test and the water temps were the same. The only difference is the tank where I moved her to is very slightly salted 3 tablespoons to 20 gallons. The only thing I can think of is that this delivery may have been a lot harder on her than the previous ones. Any suggestions?