Help, Sick Platy

[fluffattack]

My red wagtail platy has been swimming in place for a few days and doesn't seem to be eating. Her belly/chest is protruding slightly, almost coming to a 'point.' I do know she's been traumatized the past couple of months because I had put down her 'buddy' because she was beyond any help I could offer. I've been able to diagnose my fish before but this one is eluding me. Please help.

15 gallon tank with 3 guppies, 3 mollies and 9 platies (7 are still quite young)
ammonia = 0
nitrite = <0.1 mg/L
nitrate = <10 mg/L
Ph = 6

the scales seem to be sticking out a tad, but only where it's protruding. she may have scratched it up shimmying herself into hiding places, that's what it looks like to me.
I feed them nutrafin max livebearer food along with frozen freshwater food (there's 4 different mixes).
i don't think i see lumps.
i couldn't tell you about the poop, she poops when she's hiding i'd guess.

Here's a picture, you can clearly see where it's protruding.

I treated the tank for fungus a few weeks ago, do you think that may have something to do with it?

 

[omega59]

it's called Fish Dropsy, I recommend putting it down once it reaches the stage of scales sticking out, that is a sign of internal failures like the liver/bladder. Try the link below.

http/en.wikipedia.org/wiki/Fish_Dropsy

 

[fluffattack]

it's called Fish Dropsy, I recommend putting it down once it reaches the stage of scales sticking out, that is a sign of internal failures like the liver/bladder. Try the link below.

[URL="http/en.wikipedia.org/wiki/Fish_Dropsy"]http/en.wikipedia.org/wiki/Fish_Dropsy[/URL]

I just looked it up and you seem to be right. I was so used to thinking of dropsy as a full body bloat it didn't even occur to me.