I have been observing my female gourami and I think she has come down with something. One of her gills are partially open at all times and now this morning I noticed a brownish black spot on the top of her head I did some research on the internet,but like some input from you. I read that perhaps she has monogenetic trematodes and diplostomulum(fish worm?). I want to be sure that I treat it properly and the guide on one of the sites say to use parasite gaurd. Is that what I should use? Is the diagnosis correct? I am not sure.
