Any idea what this could be on my ray

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Kyledoc123

Plecostomus
MFK Member
Aug 3, 2016
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Found this today on his back fin it's raised and white any ideas also possibly how to treat it water parameters are all goodIMG_20180425_163018.jpg IMG_20180425_163009.jpg IMG_20180425_162916.jpg IMG_20180425_163018.jpg IMG_20180425_162916.jpg
 
Normally I'd suggest picking it off yourself with a tweezer since it looks isolated, but you'd probably get stabbed.

I have no idea what it is though.
 
Maybe a remanant or piece of an old stinger.
 
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