Even though different parasites, symptoms should be similar unless amyloodinium. Feed and observe to see if it actually is a white bump on the skin, not a
detritus. Since well experienced, should be able determine if it is Crypt.
If it is amylood or Crypt, what is your intended course of action in Q/T?
In over four decades of keeping, breeding fish, have seen one too many errors made by "too concerned" hobbyists causing more harm than good. Since I can not see your goby, I can not determine or suggest wether it is or not. Just concerned for Goby,