I have 2 fire fish and 2 bengai on day 10 of ttm. This is the 4th transfer with prazipro on #2 and this one. When I brought them home I noticed a gray spot on the right side of one of the firefish. I thought it was just discoloration. Today while feeding it looks more like a wound. I have not seen any fighting. I took a video and you can see a good profile shot at 20 sec mark. How should I treat it and what to do with the other 3? They are all eating normal.
https://vimeo.com/180681386
https://vimeo.com/180681386