I have had this fish for 13 days and noticed this just before I was going to transfer her our of my quarantine tank.
My 10 gallon quarantine tank is cycled, runs 2 sponge filters, contained 2 gouramis and 40 guppy fry while I have had these fish. I changed 25% water every 2-3 days with usually...
Sorry about the bad pics... micro bubbles and constantly moving pectoral fins made things difficult.
Tank is cycled
30-50% water changes every 3-4 days
1 healthy balloon blue ram
1 male pearl gourami with white spot under lip and white spot...