Hello. My pearl gourami has a pink spot that looks like a zit. It's small and round, about the size of a scale. It's kind of dome shaped and it's darker pink around the edges. He is in a 55 gallon planted tank with 6 zebra danios. I was warned once that the danios might nip the gourami but I don't think the even notice him. I have no clue what is wrong with him. He is perfectly fine except for that spot, he even seems to be eating more!