Yeah I'm quite sure, it's not anubias for sure. It's the photo problably, I'll try to make a better photo
No I did not desinfect it, I just rince the plantsNot compensated by fish and water column, because it is a very heavy root feeder. I have the same problem with my lemon plant in the garden, but it is parasite-induced. Maybe it is an aquatic analogue? Have you disinfected the plant properly, before it went into the tank. And if so; how?