Can't identify if illness or just stress

[Elle2]

I have a platy who I am not sure is diseased or just stressed. Her fins and tail are continuously closed into her body. the best way to the describe it is that she looks cold.

I have looked at a number of sites and can't find anything that approximates her problem. Other than her "skinny" condition she looks normal. It is possible that the scales on her underside are a bit rough - sort of sticking out a little, but it is slight and I can't say for sure whether this is new or not.

I have many other platies and all the rest seem fine. there have been no new introductions to the tank in months.

Any ideas?

Oh, and I have checked the parameters and every is fine... the Ph was a little low, and I know platies don't like that, but it wasn't very low and everyone else seemed fine.

 

[Zagz]

Have you seen her poo? Is it normal? Whenever a fish holds their fins close to their body it usually indicates some form of illness. Her skinny condition makes me think possibly internal parasites. Is she eating normally?

 

[Devilishturtles]

Along with Zagz's questions, does the platy look like it has dropsy?

http://www.fishpondinfo.com/health5.htm

scroll down until you see the pictures of dropy.

 

[Elle2]

Thanks everyone.

It may have been dropsy, though it was hard to tell because it was just a small part of her that had ruffled scales.

Unfortunately she did not make it. I am not sure how this would have come into my tank in the first place. Even though she is gone, should I be doing something to make sure nothing afflicts the other fish?