Gross, they died, but why?

#1
Okay this si the weirdest thing, I have had a problem TODAY with my female fish, First i ha d apregnant Female Swordtaila nd she's actually small like about an inch-1.5 and now she has a hump on ehr back and looks like she's dieing, what is this called?


Then for no reason at all i had 1 female guppy die(pregnate), 1 female betta, 1 female platy, and 1 female platy or swordtail(not sure, pregnate)

WHY could this happen?
 

Orion

Ultimate Fish
Moderator
Feb 10, 2003
5,803
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Kentucky
www.thefishcave.net
#3
Are they all in the same tank? What are the water conditions on either the tank they are in, or the tanks they are in? When you found them dead, was there anything like fungus, scrapes, or anything else not normal on the bodys?