Her (the orange and black platy) scales are kinda of spiky, not pinecone spikey, but they're definitely up a little. I also noticed her tail is starting to get discoloration (kind of white) at the base?? Is this fin rot? She's usually okay but every once and awhile I see her rubbing up on my guppies!? Not really rubbing up, more like turning to them on her side? I'm quite shocked as none of my other platies behave this way? Is she okay?