Is She Just Getting Old?

[Starfirefly26]

My little Red Wag platy (named Spirit) has been acting really shy and mellow lately. She'll find a corner of the tank to hang out in and sit there for a while.

http/i4.photobucket.com/albums/y128/Star...Fish/RedWag.jpg
This is what she looked like a few months back

http/i4.photobucket.com/albums/y128/Star...sh/IMGA0869.jpg
This is the best shot I can get of her now.

Her coloration is a bit different, almost looks cloudy with black. But it doesn't look like fungus and she's not flicking. It just looks like it's a natural part of her color.
And also theres the tail. A while back she came down with Columnaris, and part of her tail disappeared (rot or torn...I still don't know). It grew back steadily until it reached that point about a week or so back. I thought maybe it was just growing slower...but theres been no more growth since.

I've had Spirit for about 5 months now.

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And also, I've got an agressive little female Black Molly. It's mostly when I feed them, but sometimes she'll just pick another fish to chase and go after them. I've had her a few weeks...so I'm hoping this is just normal >.>

 

[guppymommy]

My black molly is really nippy since giving birth. I had another black molly that was really nippy too. I think it may just be black mollies . . . or at least the black mollies I tend to get.

As for your platy, I can't tell anything from the photos, except that her tail is damaged as you said. Maybe she never fully recovered from her illness and is just hanging in there. I hope she gets feeling better soon.