So I recently posted that my male guppy developed a raised dot on his tail overnight. The parameters of the tank are 0 ammonia, 20ppm nitrate, 0 nitrite. Temp 77. Ph 7.8.
No one has responded to my other post yet and while i was checking on him I noticed that the red raised dot is now gone and there is now a peice of his tail missing where it was. I'm so confused as to what this was and why his tail split where the dot was within hours. Any help?