Hi, I have a guppy with a white mass on/around its head that appears to be eating into its flesh. The white mass appears to be mostly on top of the head, and partly under the right side of the mouth. I would really appreciate any help you can give on the type of infection and any action I should take. I struggled to take good photos, so I filmed a video instead. I think overall this will be more helpful. Please see below. Please view at 1080p quality and full screen if you can. Thank you!