Dot on foxface pectoral fin

[Tnops]

Ever since I have gotten this foxface a week ago, I have noticed this small black spot on one of its pectroal fins. It seems to be external and not part of the actual fin. The foxface is eating well and doesn't seem to be showing any symptoms. No meds in the tank. Can I get help IDing it? I have attached a video but the dot is slightly darker and noticeable in person:

 

[thatmanMIKEson]

Yeah I see it im not sure, almost looks like mine its smaller than yours but see its not a hard stop of black then yellow it fades out a little to the yellow almot like the black dots shadow...